@import"https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap";:root{--color-primary: #0891b2;--color-primary-dark: #0e7490;--color-primary-darker: #155e75;--color-primary-light: #ecfeff;--color-primary-muted: #67e8f9;--color-accent: #7c3aed;--color-accent-light: #f5f3ff;--color-success: #059669;--color-success-light: #ecfdf5;--color-warning: #d97706;--color-warning-light: #fffbeb;--color-text: #0f172a;--color-text-secondary: #334155;--color-text-muted: #64748b;--color-bg: #ffffff;--color-bg-subtle: #f8fafc;--color-bg-muted: #f1f5f9;--color-bg-dark: #0f172a;--color-border: #e2e8f0;--color-border-light: #f1f5f9;--font-display: "Space Grotesk", system-ui, sans-serif;--font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;--shadow-xs: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-sm: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / .05);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.25rem;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .3s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}body{font-family:var(--font-sans);background-color:var(--color-bg-subtle);color:var(--color-text);line-height:1.6;font-size:16px;overflow-x:hidden;width:100%}a{text-decoration:none;color:inherit}button{font-family:inherit;cursor:pointer;border:none;background:none}img{max-width:100%;height:auto}.container{max-width:1280px;margin:0 auto;padding:0 1.5rem}@media(min-width:768px){.container{padding:0 2rem}}.min-h-screen{min-height:100vh;display:flex;flex-direction:column}.header{position:sticky;top:0;z-index:100;background-color:#fffffff2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border-light)}.header-content{height:72px;display:flex;align-items:center;justify-content:space-between}.logo-link{display:flex;align-items:center;gap:.875rem;transition:opacity var(--transition-fast);min-width:0;overflow:hidden}.logo-link:hover{opacity:.85}.logo-icon{background-color:var(--color-primary);padding:.625rem;border-radius:var(--radius-lg);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm)}.logo-text h1{font-family:var(--font-display);font-size:1.375rem;font-weight:700;color:var(--color-text);line-height:1.1;letter-spacing:-.025em;white-space:nowrap}.logo-text span{font-size:.6875rem;font-weight:600;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.1em}.nav-desktop{display:none}@media(min-width:768px){.nav-desktop{display:flex;align-items:center;gap:2.5rem}}.nav-links{display:flex;gap:2rem}.nav-link{position:relative;font-size:.9375rem;font-weight:500;color:var(--color-text-secondary);padding:.5rem 0;transition:color var(--transition-fast)}.nav-link:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background-color:var(--color-primary);transition:width var(--transition-base)}.nav-link:hover,.nav-link.active{color:var(--color-primary-dark)}.nav-link.active:after,.nav-link:hover:after{width:100%}.nav-actions{display:flex;align-items:center;gap:.75rem;padding-left:2rem;border-left:1px solid var(--color-border)}.mobile-menu-btn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--radius-lg);color:var(--color-text);transition:background-color var(--transition-fast)}.mobile-menu-btn:hover{background-color:var(--color-bg-muted)}@media(min-width:768px){.mobile-menu-btn{display:none}}.mobile-nav{position:fixed;top:73px;left:0;right:0;background-color:#fff;border-bottom:1px solid var(--color-border);padding:1.25rem;display:none;z-index:90;box-shadow:var(--shadow-lg);animation:slideDown .2s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.mobile-nav.open{display:block}.mobile-nav-content{display:flex;flex-direction:column;gap:.375rem}.mobile-nav-link{display:flex;align-items:center;padding:.875rem 1rem;border-radius:var(--radius-lg);font-weight:500;font-size:1rem;color:var(--color-text);transition:all var(--transition-fast)}.mobile-nav-link:hover,.mobile-nav-link.active{background-color:var(--color-primary-light);color:var(--color-primary)}.mobile-nav-actions{margin-top:1.25rem;padding-top:1.25rem;border-top:1px solid var(--color-border);display:flex;flex-direction:column;gap:.75rem}.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background-color:var(--color-primary);color:#fff;padding:.75rem 1.5rem;border-radius:var(--radius-lg);font-weight:600;font-size:.9375rem;box-shadow:var(--shadow-sm);transition:all var(--transition-fast)}.btn-primary:hover{background-color:var(--color-primary-dark);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background-color:#fff;color:var(--color-text);border:1.5px solid var(--color-border);padding:.75rem 1.5rem;border-radius:var(--radius-lg);font-weight:600;font-size:.9375rem;transition:all var(--transition-fast)}.btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary);background-color:var(--color-primary-light)}.btn-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-lg);color:var(--color-text-secondary);transition:all var(--transition-fast)}.btn-icon:hover{background-color:var(--color-bg-muted);color:var(--color-text)}.btn-full{width:100%}.btn-sm{padding:.5rem 1rem;font-size:.8125rem}.btn-dark{background-color:var(--color-text);color:#fff}.btn-dark:hover{background-color:#1f2937}.hero{background-color:var(--color-bg-dark);padding:0;text-align:left;position:relative;overflow:hidden;min-height:600px;display:flex;align-items:center}.hero-bg{position:absolute;top:0;right:0;width:55%;height:100%;z-index:1}.hero-bg img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;opacity:.9}.hero-bg:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--color-bg-dark) 0%,transparent 100%)}.hero-content{position:relative;z-index:10;max-width:600px;padding:4rem 0}.badge-pill{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background-color:#06b6d426;color:var(--color-primary);border-radius:var(--radius-full);font-size:.8125rem;font-weight:600;margin-bottom:1.5rem;border:1px solid rgba(6,182,212,.3)}.hero h1{font-family:var(--font-display);font-size:3rem;font-weight:700;line-height:1.1;margin-bottom:1.5rem;color:#fff;letter-spacing:-.03em}.hero h1 .highlight{color:var(--color-primary)}@media(min-width:768px){.hero h1{font-size:4rem}}@media(max-width:768px){.hero{text-align:center;padding:2rem 0;min-height:auto}.hero h1{font-size:2.5rem}.hero-bg{width:100%;opacity:.3}.hero-content{max-width:100%;padding:2rem 0}.hero-search-box{flex-direction:column;border-radius:0;padding:0;gap:.75rem;background:none!important;border:none!important;-webkit-backdrop-filter:none!important;backdrop-filter:none!important;box-shadow:none!important;max-width:100%}.hero-search-box:focus-within{box-shadow:none!important;background:none!important;border-color:transparent!important}.search-input-wrapper{width:100%;padding:.75rem 1rem;border-bottom:none;background:none;border-radius:0;border:none;border-bottom:1px solid rgba(255,255,255,.2)}.search-input-wrapper:focus-within{background:none;border-color:transparent;border-bottom-color:var(--color-primary)}.search-select-wrapper{width:100%;padding-right:0}.hero-search-box select{width:100%;border-radius:var(--radius-lg);padding:.875rem 1.25rem .875rem 2.75rem}.filter-icon{left:1.25rem}.search-divider{display:none}.hero-stats{justify-content:center;flex-wrap:wrap;gap:1.5rem}.stat-divider{display:none}}@media(max-width:480px){.container{padding:0 1rem}.hero{min-height:auto;padding:1.5rem 0}.hero h1{font-size:1.875rem;margin-bottom:1rem}.hero p{font-size:.9375rem;margin-bottom:1.5rem}.hero-content{padding:1.5rem 0}.badge-pill{font-size:.6875rem;padding:.375rem .75rem;margin-bottom:1rem}.hero-search-box{padding:0;gap:.625rem;margin-bottom:1.5rem;background:none!important;border:none!important}.hero-search-box:focus-within{box-shadow:none!important}.search-input-wrapper{background:none;border-radius:0;padding:.5rem .875rem;border:none;border-bottom:1px solid rgba(255,255,255,.2)}.search-select-wrapper{width:100%;padding-right:0}.hero-search-box input{font-size:.875rem;padding:.5rem 0}.hero-search-box select{padding:.75rem 1rem .75rem 2.5rem;font-size:.8125rem;border-radius:var(--radius-lg)}.hero-stats{gap:1rem}.stat-value{font-size:1.5rem}.stat-label{font-size:.625rem}.header-content{height:60px}.logo-icon{padding:.5rem}.logo-icon svg{width:20px;height:20px}.logo-text h1{font-size:1.125rem}.logo-text span{font-size:.5625rem;display:none}.mobile-nav{top:61px}.note-card{padding:1rem}.card-header{gap:.75rem}.file-icon{width:44px;height:44px}.file-icon svg{width:20px;height:20px}.card-tags{gap:.25rem}.tag{font-size:.5625rem;padding:.1875rem .5rem}.card-title{font-size:.9375rem}.card-author{font-size:.75rem}.card-footer{flex-direction:column;gap:.75rem;align-items:stretch}.card-actions{justify-content:flex-end}.btn-icon{width:36px;height:36px}.btn-primary.btn-sm{padding:.5rem .875rem;font-size:.75rem}.py-16{padding-top:2rem;padding-bottom:2rem}.text-3xl{font-size:1.5rem}.mb-10{margin-bottom:1.5rem}.modal-overlay{padding:.5rem;align-items:flex-end}.modal-content{max-height:95vh;border-radius:var(--radius-xl) var(--radius-xl) 0 0}.modal-header,.modal-body{padding:1rem}.form-input,.form-select{padding:.625rem .875rem;font-size:.875rem}.upload-area{padding:1.5rem 1rem}.btn-primary{padding:.625rem 1.25rem;font-size:.875rem}}.hero p{font-size:1.125rem;color:#94a3b8;margin-bottom:2rem;line-height:1.7}.hero-search-box{background:#ffffff0d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-full);padding:.5rem;display:flex;align-items:center;max-width:560px;margin-bottom:2.5rem;transition:all var(--transition-fast)}.hero-search-box:focus-within{background:#ffffff1a;border-color:var(--color-primary);box-shadow:0 0 0 4px #06b6d426}.search-input-wrapper{flex:1;display:flex;align-items:center;padding-left:1.25rem}.search-icon{color:#64748b;margin-right:.75rem;flex-shrink:0}.hero-search-box input{width:100%;border:none;outline:none;font-size:1rem;font-weight:500;padding:.875rem 0;color:#fff;background:transparent}.hero-search-box input::-moz-placeholder{color:#64748b;font-weight:400}.hero-search-box input::placeholder{color:#64748b;font-weight:400}.search-divider{width:1px;height:2rem;background-color:#ffffff1a;margin:0 1rem}.search-select-wrapper{position:relative;padding-right:.5rem}.filter-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:#64748b;pointer-events:none}.hero-search-box select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:var(--color-primary);border:none;padding:.75rem 1.25rem .75rem 2.75rem;border-radius:var(--radius-full);font-size:.875rem;font-weight:600;color:#fff;cursor:pointer;outline:none;transition:background-color var(--transition-fast)}.hero-search-box select:hover{background-color:var(--color-primary-dark)}.hero-stats{display:flex;align-items:center;gap:2rem}@media(min-width:768px){.hero-stats{gap:3rem}}.stat-item{text-align:left}@media(max-width:768px){.stat-item{text-align:center}}.stat-value{display:block;font-family:var(--font-display);font-size:2rem;font-weight:700;color:#fff;letter-spacing:-.02em}.stat-label{font-size:.75rem;font-weight:500;color:#64748b;text-transform:uppercase;letter-spacing:.1em}.stat-divider{width:1px;height:3rem;background-color:#ffffff1a}.notes-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-top:2rem}@media(min-width:640px){.notes-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.notes-grid{grid-template-columns:repeat(3,1fr)}}.note-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;transition:all var(--transition-base);position:relative;overflow:hidden}.note-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background-color:var(--color-primary);transform:scaleX(0);transition:transform var(--transition-base)}.note-card:hover{border-color:var(--color-primary-muted);box-shadow:var(--shadow-lg);transform:translateY(-4px)}.note-card:hover:before{transform:scaleX(1)}.card-header{display:flex;gap:1rem;margin-bottom:1rem}.file-icon{background-color:var(--color-primary-light);color:var(--color-primary);width:52px;height:52px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all var(--transition-base)}.note-card:hover .file-icon{background-color:var(--color-primary);color:#fff}.card-content{flex:1;min-width:0}.card-tags{display:flex;flex-wrap:wrap;gap:.375rem;margin-bottom:.625rem}.tag{font-size:.6875rem;font-weight:600;text-transform:uppercase;padding:.25rem .625rem;border-radius:var(--radius-md);letter-spacing:.03em}.tag-grade{background-color:var(--color-bg-muted);color:var(--color-text-secondary)}.tag-subject{background-color:var(--color-primary-light);color:var(--color-primary)}.tag-type{background-color:var(--color-accent-light);color:var(--color-accent)}.card-title{font-family:var(--font-display);font-size:1.0625rem;font-weight:600;color:var(--color-text);line-height:1.4;margin-bottom:.25rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-author{font-size:.8125rem;color:var(--color-text-secondary);font-weight:500}.card-footer{display:flex;justify-content:space-between;align-items:center;padding-top:1rem;border-top:1px solid var(--color-border-light);margin-top:1rem}.file-size-label{font-size:.6875rem;font-weight:600;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.file-size-value{font-size:.875rem;font-weight:700;color:var(--color-text)}.card-actions{display:flex;gap:.5rem}.request-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;transition:all var(--transition-base)}.request-card:hover{border-color:var(--color-primary-muted);box-shadow:var(--shadow-md)}.request-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:1rem;gap:1rem}.status-badge{display:inline-flex;align-items:center;gap:.375rem;font-size:.6875rem;font-weight:700;padding:.375rem .75rem;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em;flex-shrink:0}.status-open{background-color:var(--color-warning-light);color:var(--color-warning);border:1px solid #fde68a}.status-fulfilled{background-color:var(--color-success-light);color:var(--color-success);border:1px solid #a7f3d0}.modal-overlay{position:fixed;inset:0;background-color:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:200;padding:1rem;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:#fff;width:100%;max-width:480px;border-radius:var(--radius-2xl);box-shadow:var(--shadow-xl);overflow:hidden;animation:scaleIn .25s cubic-bezier(.16,1,.3,1);max-height:90vh;display:flex;flex-direction:column}@keyframes scaleIn{0%{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid var(--color-border-light);background-color:var(--color-bg-subtle)}.modal-body{padding:1.5rem;overflow-y:auto}.form-group{margin-bottom:1.25rem}.form-label{display:block;font-size:.875rem;font-weight:600;margin-bottom:.5rem;color:var(--color-text)}.form-input,.form-select{width:100%;padding:.75rem 1rem;border:1.5px solid var(--color-border);border-radius:var(--radius-lg);font-size:.9375rem;font-weight:500;outline:none;transition:all var(--transition-fast);background-color:#fff}.form-input::-moz-placeholder{color:var(--color-text-muted);font-weight:400}.form-input::placeholder{color:var(--color-text-muted);font-weight:400}.form-input:focus,.form-select:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.upload-area{border:2px dashed var(--color-border);border-radius:var(--radius-xl);padding:2.5rem 1.5rem;text-align:center;cursor:pointer;transition:all var(--transition-base);background-color:var(--color-bg-subtle)}.upload-area:hover,.upload-area.active{border-color:var(--color-primary);background-color:var(--color-primary-light)}.text-center{text-align:center}.mb-2{margin-bottom:.5rem}.mb-4{margin-bottom:1rem}.mb-6{margin-bottom:1.5rem}.mb-10{margin-bottom:2.5rem}.py-16{padding-top:4rem;padding-bottom:4rem}.flex{display:flex}.flex-col{flex-direction:column}.flex-row{flex-direction:row}.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.self-start{align-self:flex-start}.self-auto{align-self:auto}.gap-2{gap:.5rem}.gap-4{gap:1rem}@media(max-width:768px){.md\:flex-row{flex-direction:row}.md\:items-center{align-items:center}.md\:self-auto{align-self:auto}}.form-row{display:flex;gap:1rem;margin-bottom:1rem}.form-col{flex:1;min-width:0}@media(max-width:640px){.form-row{flex-direction:column;gap:1rem}}.text-3xl{font-family:var(--font-display);font-size:1.875rem;font-weight:700;letter-spacing:-.02em;color:var(--color-text)}.text-gray-500{color:var(--color-text-secondary)}.text-primary{color:var(--color-primary-dark);font-weight:600}.text-primary:hover{color:var(--color-primary-darker)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-muted)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}::-moz-selection{background-color:var(--color-primary-muted);color:var(--color-primary-darker)}::selection{background-color:var(--color-primary-muted);color:var(--color-primary-darker)}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}body.lite-mode{--shadow-xs: none;--shadow-sm: none;--shadow-md: none;--shadow-lg: none;--shadow-xl: none}body.lite-mode *{transition:none!important;animation:none!important;-webkit-backdrop-filter:none!important;backdrop-filter:none!important}body.lite-mode .note-card:hover,body.lite-mode .request-card:hover{transform:none}.filter-toggle-btn{display:flex;align-items:center;gap:.5rem;background-color:var(--color-primary);color:#fff;padding:.75rem 1.25rem;border-radius:var(--radius-full);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);border:none}.filter-toggle-btn:hover{background-color:var(--color-primary-dark)}.filter-badge{background-color:#fff;color:var(--color-primary);font-size:.6875rem;font-weight:700;padding:.125rem .5rem;border-radius:var(--radius-full);min-width:1.25rem;text-align:center}.advanced-filters-panel{background:#ffffff14;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius-xl);padding:1.5rem;margin-bottom:1.5rem;max-width:850px;animation:slideDown .3s ease-out;overflow:visible}.filters-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.25rem}.filters-header h4{color:#fff;font-size:1rem;font-weight:600;margin:0}.clear-filters-btn{display:flex;align-items:center;gap:.375rem;background:#ef444433;color:#fca5a5;padding:.375rem .75rem;border-radius:var(--radius-md);font-size:.75rem;font-weight:600;cursor:pointer;border:1px solid rgba(239,68,68,.3);transition:all var(--transition-fast)}.clear-filters-btn:hover{background:#ef44444d;border-color:#ef444480}.filters-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-bottom:1.25rem;width:100%}@media(min-width:768px){.filters-grid{grid-template-columns:repeat(4,1fr)}}.filter-group{display:flex;flex-direction:column;gap:.5rem;min-width:0;overflow:hidden}.filter-group-wide{grid-column:span 2}.filter-label{display:flex;align-items:center;gap:.375rem;color:#94a3b8;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em}.filter-select{background:#ffffff1a;border:1px solid rgba(255,255,255,.15);border-radius:var(--radius-lg);padding:.625rem 2.5rem .625rem .875rem;color:#fff;font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;min-width:0;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .75rem center;background-size:1rem}.filter-select:hover{border-color:var(--color-primary);background-color:#ffffff26}.filter-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #06b6d433}.filter-select option{background-color:var(--color-bg-dark);color:#fff}.sort-section{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;padding-top:1rem;border-top:1px solid rgba(255,255,255,.1)}.sort-buttons{display:flex;flex-wrap:wrap;gap:.5rem}.sort-btn{background:#ffffff1a;border:1px solid rgba(255,255,255,.15);color:#94a3b8;padding:.5rem .875rem;border-radius:var(--radius-md);font-size:.75rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.sort-btn:hover,.sort-btn.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.quick-filters{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:2rem}.quick-filter-chip{background:#ffffff14;border:1px solid rgba(255,255,255,.15);color:#94a3b8;padding:.5rem 1rem;border-radius:var(--radius-full);font-size:.8125rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.quick-filter-chip:hover{background:#ffffff1f;border-color:#ffffff40;color:#fff}.quick-filter-chip.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.view-toggle{display:flex;background:var(--color-bg-muted);border-radius:var(--radius-lg);padding:.25rem;gap:.25rem}.view-toggle-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-md);color:var(--color-text-muted);cursor:pointer;transition:all var(--transition-fast);border:none;background:transparent}.view-toggle-btn:hover{color:var(--color-text)}.view-toggle-btn.active{background:#fff;color:var(--color-primary);box-shadow:var(--shadow-sm)}.notes-list{display:flex;flex-direction:column;gap:1rem}.note-card-list{display:flex;align-items:center;gap:1.5rem;padding:1.25rem 1.5rem}.note-card-list .card-header{flex:1;margin-bottom:0}.note-card-list .card-content{display:flex;flex-direction:column;gap:.375rem}.note-card-list .card-meta{display:flex;align-items:center;gap:1rem}.note-card-list .card-date{display:flex;align-items:center;gap:.25rem;font-size:.75rem;color:var(--color-text-muted)}.card-list-stats{display:flex;align-items:center;gap:1.5rem;padding:0 1.5rem;border-left:1px solid var(--color-border-light);border-right:1px solid var(--color-border-light)}.stat-item-small{display:flex;align-items:center;gap:.375rem;color:var(--color-text-secondary);font-size:.875rem;font-weight:500}.note-card-list .card-actions{flex-shrink:0}@media(max-width:768px){.note-card-list{flex-direction:column;align-items:stretch;gap:1rem}.card-list-stats{border:none;padding:0;border-top:1px solid var(--color-border-light);padding-top:1rem}.note-card-list .card-actions{justify-content:flex-end}}.card-stats{display:flex;align-items:center;gap:1rem}.download-count{display:flex;align-items:center;gap:.25rem;font-size:.8125rem;color:var(--color-text-muted);font-weight:500}.tag-year{background-color:var(--color-warning-light);color:var(--color-warning)}.loading-grid{display:grid;grid-template-columns:1fr;gap:1.5rem}@media(min-width:640px){.loading-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.loading-grid{grid-template-columns:repeat(3,1fr)}}.skeleton-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.skeleton-header{display:flex;gap:1rem;margin-bottom:1rem}.skeleton-icon{width:52px;height:52px;background:var(--color-bg-muted);border-radius:var(--radius-lg)}.skeleton-content{flex:1;display:flex;flex-direction:column;gap:.5rem}.skeleton-tags{width:60%;height:20px;background:var(--color-bg-muted);border-radius:var(--radius-md)}.skeleton-title{width:100%;height:24px;background:var(--color-bg-muted);border-radius:var(--radius-md)}.skeleton-author{width:40%;height:16px;background:var(--color-bg-muted);border-radius:var(--radius-md)}.skeleton-footer{height:40px;background:var(--color-bg-muted);border-radius:var(--radius-md);margin-top:1rem}.filter-summary{color:var(--color-primary);font-weight:500}.form-hint{display:block;font-size:.6875rem;color:var(--color-text-muted);margin-top:.25rem}@media(max-width:640px){.filters-grid{grid-template-columns:1fr}.filter-group-wide{grid-column:span 1}.sort-section{flex-direction:column;align-items:flex-start}.sort-buttons{width:100%}.sort-btn{flex:1;text-align:center}.quick-filters{justify-content:center}.advanced-filters-panel{padding:1rem}}.nav-dropdown{position:relative}.dropdown-trigger{display:flex;align-items:center;gap:.25rem;cursor:pointer}.dropdown-trigger svg{transition:transform var(--transition-fast)}.dropdown-trigger svg.rotate{transform:rotate(180deg)}.dropdown-menu{position:absolute;top:100%;left:50%;transform:translate(-50%);margin-top:.75rem;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:.5rem;min-width:200px;box-shadow:var(--shadow-lg);z-index:50;animation:fadeIn .2s ease-out}.dropdown-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-radius:var(--radius-lg);font-size:.875rem;font-weight:500;color:var(--color-text-secondary);transition:all var(--transition-fast)}.dropdown-item:hover,.dropdown-item.active{background:var(--color-primary-light);color:var(--color-primary)}.dropdown-item svg{flex-shrink:0}.mobile-nav-section{border-top:1px solid var(--color-border);margin-top:.5rem;padding-top:.5rem}.mobile-nav-section-title{display:block;font-size:.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--color-text-muted);padding:.75rem 1rem .375rem}.mobile-nav-link svg{margin-right:.5rem;flex-shrink:0}.syllabus-header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:1.5rem;margin-bottom:2rem}.syllabus-header h1{font-family:var(--font-display);font-size:2rem;font-weight:700;color:var(--color-text)}.level-tabs{display:flex;gap:.5rem;background:var(--color-bg-muted);padding:.25rem;border-radius:var(--radius-lg)}.level-tab{padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;font-size:.875rem;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast);border:none;background:transparent}.level-tab:hover{color:var(--color-text)}.level-tab.active{background:#fff;color:var(--color-primary);box-shadow:var(--shadow-sm)}.overall-progress{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;padding:1.5rem;border-radius:var(--radius-xl);margin-bottom:2rem;display:flex;align-items:center;gap:2rem}.progress-circle{width:100px;height:100px;border-radius:50%;background:#fff3;display:flex;align-items:center;justify-content:center;flex-shrink:0}.progress-percentage{font-size:1.75rem;font-weight:700}.progress-info h3{font-size:1.125rem;margin-bottom:.25rem}.progress-info p{opacity:.9;font-size:.875rem}.progress-bar-large{width:100%;height:8px;background:#fff3;border-radius:var(--radius-full);margin-top:1rem;overflow:hidden}.progress-bar-fill{height:100%;background:#fff;border-radius:var(--radius-full);transition:width .5s ease-out}.syllabus-grid{display:grid;grid-template-columns:1fr;gap:1.5rem}@media(min-width:768px){.syllabus-grid{grid-template-columns:repeat(2,1fr)}}.subject-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);overflow:hidden;transition:all var(--transition-base)}.subject-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.subject-header{display:flex;justify-content:space-between;align-items:center;padding:1.25rem;cursor:pointer;transition:background-color var(--transition-fast)}.subject-header:hover{background:var(--color-bg-subtle)}.subject-icon{font-size:1.5rem;margin-right:.75rem}.subject-name{font-weight:600;font-size:1rem}.subject-progress{display:flex;align-items:center;gap:.75rem}.progress-bar{width:60px;height:6px;background:var(--color-bg-muted);border-radius:var(--radius-full);overflow:hidden}.progress-bar-fill{height:100%;background:var(--color-primary);border-radius:var(--radius-full);transition:width .3s ease-out}.progress-text{font-size:.75rem;font-weight:600;color:var(--color-text-secondary);min-width:36px;text-align:right}.topics-list{border-top:1px solid var(--color-border-light);max-height:0;overflow:hidden;transition:max-height .3s ease-out}.topics-list.open{max-height:500px;overflow-y:auto}.topic-item{display:flex;align-items:center;gap:.75rem;padding:.875rem 1.25rem;border-bottom:1px solid var(--color-border-light);cursor:pointer;transition:background-color var(--transition-fast)}.topic-item:last-child{border-bottom:none}.topic-item:hover{background:var(--color-bg-subtle)}.topic-checkbox{width:20px;height:20px;border-radius:var(--radius-md);border:2px solid var(--color-border);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all var(--transition-fast)}.topic-checkbox.checked{background:var(--color-success);border-color:var(--color-success);color:#fff}.topic-name{flex:1;font-size:.875rem;color:var(--color-text-secondary)}.topic-item.completed .topic-name{text-decoration:line-through;color:var(--color-text-muted)}.topic-status{display:flex;gap:.375rem}.status-dot{width:8px;height:8px;border-radius:50%;cursor:pointer}.status-dot.red{background:#ef4444}.status-dot.yellow{background:#f59e0b}.status-dot.green{background:#10b981}.status-dot.active{box-shadow:0 0 0 2px var(--color-bg),0 0 0 4px currentColor}.gap-legend{display:flex;gap:1rem;margin-top:1.5rem;justify-content:center;flex-wrap:wrap}.legend-item{display:flex;align-items:center;gap:.375rem;font-size:.75rem;color:var(--color-text-secondary)}.legend-dot{width:10px;height:10px;border-radius:50%}.gap-analysis-summary{background:linear-gradient(135deg,#fef3c7,#fde68a);border:1px solid #fbbf24;border-radius:var(--radius-xl);padding:1.5rem;margin-top:2rem}.gap-analysis-summary h3{color:#92400e;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}.gap-subjects{display:flex;flex-wrap:wrap;gap:.5rem}.gap-subject-tag{background:#fff;color:#92400e;padding:.375rem .75rem;border-radius:var(--radius-full);font-size:.8125rem;font-weight:500}.video-header{margin-bottom:2rem}.video-header h1{font-family:var(--font-display);font-size:2rem;font-weight:700;color:var(--color-text);margin-bottom:.5rem}.video-filters{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:2rem}.video-filters select{padding:.625rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:.875rem;font-weight:500;background:#fff;cursor:pointer;min-width:150px}.video-grid{display:grid;grid-template-columns:1fr;gap:1.5rem}@media(min-width:640px){.video-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.video-grid{grid-template-columns:repeat(3,1fr)}}.video-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);overflow:hidden;transition:all var(--transition-base)}.video-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.video-thumbnail{position:relative;aspect-ratio:16/9;background:var(--color-bg-muted);overflow:hidden}.video-thumbnail img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.play-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#0000004d;opacity:0;transition:opacity var(--transition-fast)}.video-card:hover .play-overlay{opacity:1}.play-button{width:60px;height:60px;background:var(--color-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-lg)}.video-content{padding:1rem}.video-tags{display:flex;flex-wrap:wrap;gap:.375rem;margin-bottom:.75rem}.video-title{font-weight:600;font-size:.9375rem;color:var(--color-text);margin-bottom:.25rem;line-height:1.4}.video-channel{font-size:.8125rem;color:var(--color-text-muted)}.official-channels{background:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;margin-bottom:2rem}.official-channels h3{font-size:1rem;font-weight:600;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.channels-list{display:flex;flex-wrap:wrap;gap:.75rem}.channel-link{display:flex;align-items:center;gap:.375rem;background:#fff;padding:.5rem 1rem;border-radius:var(--radius-full);font-size:.8125rem;font-weight:500;color:var(--color-text);border:1px solid var(--color-border);transition:all var(--transition-fast)}.channel-link:hover{border-color:var(--color-primary);color:var(--color-primary)}.planner-header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:1.5rem;margin-bottom:2rem}.planner-header h1{font-family:var(--font-display);font-size:2rem;font-weight:700;color:var(--color-text)}.exam-setup-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:2rem;margin-bottom:2rem;max-width:600px}.exam-setup-card h3{font-size:1.125rem;margin-bottom:1.5rem;display:flex;align-items:center;gap:.5rem}.date-inputs{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:1.5rem}.date-input-group{flex:1;min-width:200px}.date-input-group label{display:block;font-size:.8125rem;font-weight:600;color:var(--color-text-secondary);margin-bottom:.5rem}.date-input-group input{width:100%;padding:.75rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:.9375rem}.days-left-banner{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;padding:1.5rem;border-radius:var(--radius-xl);margin-bottom:2rem;display:flex;align-items:center;gap:1.5rem}.days-number{font-size:3rem;font-weight:700;line-height:1}.days-text{font-size:1.125rem}.schedule-section{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem}.schedule-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.schedule-header h3{display:flex;align-items:center;gap:.5rem;font-size:1rem;font-weight:600}.week-tabs{display:flex;gap:.375rem;overflow-x:auto;padding-bottom:.5rem;margin-bottom:1rem}.week-tab{padding:.5rem 1rem;border-radius:var(--radius-md);font-size:.8125rem;font-weight:600;color:var(--color-text-secondary);background:var(--color-bg-muted);cursor:pointer;white-space:nowrap;transition:all var(--transition-fast);border:none}.week-tab:hover,.week-tab.active{background:var(--color-primary);color:#fff}.schedule-days{display:flex;flex-direction:column;gap:.75rem}.schedule-day{display:flex;gap:1rem;padding:1rem;background:var(--color-bg-subtle);border-radius:var(--radius-lg)}.day-label{width:80px;font-weight:600;font-size:.875rem;color:var(--color-text);flex-shrink:0}.day-tasks{flex:1;display:flex;flex-wrap:wrap;gap:.5rem}.task-chip{display:flex;align-items:center;gap:.375rem;background:#fff;padding:.375rem .75rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:500;border:1px solid var(--color-border);cursor:pointer;transition:all var(--transition-fast)}.task-chip:hover{border-color:var(--color-primary)}.task-chip.completed{background:var(--color-success-light);border-color:var(--color-success);text-decoration:line-through;color:var(--color-success)}.share-schedule-btn{display:flex;align-items:center;gap:.5rem;background:#25d366;color:#fff;padding:.75rem 1.25rem;border-radius:var(--radius-lg);font-size:.875rem;font-weight:600;border:none;cursor:pointer;transition:all var(--transition-fast)}.share-schedule-btn:hover{background:#20bd5a}.revision-header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:1.5rem;margin-bottom:2rem}.revision-header h1{font-family:var(--font-display);font-size:2rem;font-weight:700;color:var(--color-text)}.subject-tabs{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:2rem}.subject-tab{padding:.625rem 1.25rem;border-radius:var(--radius-full);font-size:.875rem;font-weight:600;color:var(--color-text-secondary);background:#fff;border:1px solid var(--color-border);cursor:pointer;transition:all var(--transition-fast)}.subject-tab:hover{border-color:var(--color-primary);color:var(--color-primary)}.subject-tab.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.card-viewer{max-width:600px;margin:0 auto}.revision-card-display{background:#fff;border:2px solid var(--color-border);border-radius:var(--radius-2xl);padding:2rem;min-height:300px;display:flex;flex-direction:column;margin-bottom:1.5rem;position:relative;overflow:hidden}.revision-card-display:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--color-primary),var(--color-accent))}.card-category{display:inline-flex;align-items:center;gap:.375rem;background:var(--color-primary-light);color:var(--color-primary);padding:.375rem .75rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:600;margin-bottom:1rem;align-self:flex-start}.card-formula-title{font-size:1.125rem;font-weight:600;color:var(--color-text);margin-bottom:1rem}.card-formula{flex:1;display:flex;align-items:center;justify-content:center;font-size:1.75rem;font-weight:700;color:var(--color-text);font-family:Courier New,monospace;text-align:center;padding:1rem;background:var(--color-bg-subtle);border-radius:var(--radius-lg)}.card-hint{margin-top:1rem;padding:.75rem 1rem;background:var(--color-warning-light);border-radius:var(--radius-md);font-size:.8125rem;color:#92400e;display:flex;align-items:flex-start;gap:.5rem}.card-navigation{display:flex;justify-content:space-between;align-items:center;gap:1rem}.nav-btn{display:flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:var(--radius-lg);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);border:none}.nav-btn.prev{background:var(--color-bg-muted);color:var(--color-text)}.nav-btn.prev:hover{background:var(--color-bg);box-shadow:var(--shadow-md)}.nav-btn.next{background:var(--color-primary);color:#fff}.nav-btn.next:hover{background:var(--color-primary-dark)}.nav-btn:disabled{opacity:.5;cursor:not-allowed}.card-counter{font-size:.875rem;font-weight:600;color:var(--color-text-secondary)}.card-actions-row{display:flex;justify-content:center;gap:1rem;margin-top:1.5rem}.action-btn{display:flex;align-items:center;gap:.5rem;padding:.625rem 1rem;border-radius:var(--radius-lg);font-size:.8125rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);border:1px solid var(--color-border);background:#fff;color:var(--color-text-secondary)}.action-btn.saved{background:var(--color-success-light);border-color:var(--color-success);color:var(--color-success)}.impact-header{margin-bottom:2rem}.impact-header h1{font-family:var(--font-display);font-size:2rem;font-weight:700;color:var(--color-text);margin-bottom:.5rem}.impact-stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-bottom:2rem}@media(min-width:768px){.impact-stats-grid{grid-template-columns:repeat(4,1fr)}}.impact-stat-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;display:flex;align-items:center;gap:1rem}.impact-stat-card .stat-icon{width:50px;height:50px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;flex-shrink:0}.impact-stat-card.primary .stat-icon{background:var(--color-primary-light);color:var(--color-primary)}.impact-stat-card.success .stat-icon{background:var(--color-success-light);color:var(--color-success)}.impact-stat-card.warning .stat-icon{background:var(--color-warning-light);color:var(--color-warning)}.impact-stat-card.info .stat-icon{background:var(--color-accent-light);color:var(--color-accent)}.stat-info{display:flex;flex-direction:column}.stat-number{font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--color-text)}.stat-label{font-size:.75rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.charts-row{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-bottom:2rem}@media(min-width:768px){.charts-row{grid-template-columns:repeat(2,1fr)}}.chart-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem}.chart-card h3{font-size:1rem;font-weight:600;margin-bottom:1.25rem}.bar-chart{display:flex;flex-direction:column;gap:.75rem}.bar-item{display:flex;align-items:center;gap:.75rem}.bar-label{width:40px;font-size:.75rem;font-weight:600;color:var(--color-text-secondary);flex-shrink:0}.bar-container{flex:1;height:20px;background:var(--color-bg-muted);border-radius:var(--radius-full);overflow:hidden}.bar-fill{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-accent));border-radius:var(--radius-full);transition:width .5s ease-out}.bar-value{width:30px;font-size:.8125rem;font-weight:600;color:var(--color-text);text-align:right}.pie-legend{display:flex;flex-direction:column;gap:.75rem}.legend-item{display:flex;align-items:center;gap:.75rem}.legend-color{width:12px;height:12px;border-radius:var(--radius-sm);flex-shrink:0}.legend-color.color-0{background:var(--color-primary)}.legend-color.color-1{background:var(--color-accent)}.legend-color.color-2{background:var(--color-success)}.legend-color.color-3{background:var(--color-warning)}.legend-color.color-4{background:#ec4899}.legend-label{flex:1;font-size:.875rem;color:var(--color-text-secondary)}.legend-count{font-size:.875rem;font-weight:600;color:var(--color-text)}.gap-analysis-section{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;margin-bottom:2rem}.gap-analysis-section h3{display:flex;align-items:center;gap:.5rem;font-size:1rem;font-weight:600;margin-bottom:1.25rem}.gap-cards{display:grid;grid-template-columns:1fr;gap:1rem}@media(min-width:768px){.gap-cards{grid-template-columns:repeat(3,1fr)}}.gap-card{padding:1rem;border-radius:var(--radius-lg)}.gap-card.danger{background:#fef2f2;border:1px solid #fecaca}.gap-card.warning{background:var(--color-warning-light);border:1px solid #fde68a}.gap-card.info{background:var(--color-primary-light);border:1px solid var(--color-primary-muted)}.gap-card h4{font-size:.875rem;font-weight:600;margin-bottom:.5rem}.gap-card p{font-size:.8125rem;color:var(--color-text-secondary);margin-bottom:.75rem}.gap-tags{display:flex;flex-wrap:wrap;gap:.375rem}.gap-tag{background:#fff;padding:.25rem .625rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:500}.bottom-row{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-bottom:2rem}@media(min-width:768px){.bottom-row{grid-template-columns:2fr 1fr}}.activity-card,.contributors-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem}.activity-card h3,.contributors-card h3{font-size:1rem;font-weight:600;margin-bottom:1rem}.activity-list{display:flex;flex-direction:column;gap:.75rem}.activity-item{display:flex;align-items:center;gap:.75rem;padding:.75rem;background:var(--color-bg-subtle);border-radius:var(--radius-lg)}.activity-icon{width:32px;height:32px;background:var(--color-primary-light);color:var(--color-primary);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}.activity-info{flex:1;min-width:0}.activity-title{display:block;font-size:.875rem;font-weight:500;color:var(--color-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.activity-meta{font-size:.75rem;color:var(--color-text-muted)}.activity-time{font-size:.75rem;color:var(--color-text-muted);flex-shrink:0}.contributors-list{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1.5rem}.contributor-item{display:flex;align-items:center;gap:.75rem;padding:.75rem;background:var(--color-bg-subtle);border-radius:var(--radius-lg)}.rank{font-size:1.25rem;width:32px;text-align:center}.contributor-info{flex:1}.contributor-name{display:block;font-size:.875rem;font-weight:600;color:var(--color-text)}.contributor-count{font-size:.75rem;color:var(--color-text-muted)}.cta-section{text-align:center;padding-top:1rem;border-top:1px solid var(--color-border-light)}.cta-section p{font-size:.8125rem;color:var(--color-text-secondary);margin-bottom:.25rem}.impact-cta{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border-radius:var(--radius-xl);padding:2rem}.impact-cta .cta-content{text-align:center;color:#fff}.impact-cta h3{font-size:1.25rem;margin-bottom:.5rem}.impact-cta p{opacity:.9;margin-bottom:1.5rem;max-width:500px;margin-left:auto;margin-right:auto}.impact-cta .btn-primary{background:#fff;color:var(--color-primary)}.impact-cta .btn-primary:hover{background:var(--color-bg-subtle)}.thank-you-header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:1.5rem;margin-bottom:2rem}.thank-you-header h1{font-family:var(--font-display);font-size:2rem;font-weight:700;color:var(--color-text)}.thank-you-form-container{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;margin-bottom:2rem;max-width:600px;animation:slideDown .3s ease-out}.thank-you-form h3{font-size:1rem;font-weight:600;margin-bottom:1.25rem;display:flex;align-items:center;gap:.5rem}.thank-you-form .form-row{display:flex;gap:1rem;align-items:flex-end}.thank-you-form .form-group{margin-bottom:1rem}.thank-you-form label{display:block;font-size:.8125rem;font-weight:600;color:var(--color-text-secondary);margin-bottom:.5rem}.thank-you-form input[type=text],.thank-you-form select,.thank-you-form textarea{width:100%;padding:.75rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:.9375rem}.thank-you-form textarea{resize:vertical;min-height:100px}.checkbox-label{display:flex!important;align-items:center;gap:.5rem;cursor:pointer}.checkbox-label input[type=checkbox]{width:18px;height:18px;cursor:pointer}.thank-you-stats{display:flex;justify-content:center;gap:3rem;padding:1.5rem;background:var(--color-bg-subtle);border-radius:var(--radius-xl);margin-bottom:2rem}.thank-you-stats .stat-item{display:flex;flex-direction:column;align-items:center;gap:.375rem}.thank-you-stats .stat-number{font-size:1.75rem}.thank-you-stats .stat-label{font-size:.6875rem}.text-danger{color:#dc2626}.text-primary{color:var(--color-primary-dark)}.text-warning{color:var(--color-warning)}.filter-bar{display:flex;align-items:center;gap:.75rem;margin-bottom:1.5rem;font-size:.875rem;color:var(--color-text-secondary)}.filter-bar select{padding:.5rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:.875rem;background:#fff}.thank-you-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-bottom:2rem}@media(min-width:640px){.thank-you-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.thank-you-grid{grid-template-columns:repeat(3,1fr)}}.thank-you-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;position:relative;overflow:hidden}.thank-you-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px}.thank-you-card.color-0:before{background:var(--color-primary)}.thank-you-card.color-1:before{background:var(--color-accent)}.thank-you-card.color-2:before{background:var(--color-success)}.thank-you-card.color-3:before{background:var(--color-warning)}.thank-you-card.color-4:before{background:#ec4899}.thank-you-card .card-header{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem}.thank-you-card .avatar{width:40px;height:40px;background:var(--color-bg-muted);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--color-text-muted)}.sender-info{flex:1}.sender-name{display:block;font-weight:600;font-size:.9375rem;color:var(--color-text)}.send-date{display:flex;align-items:center;gap:.25rem;font-size:.75rem;color:var(--color-text-muted)}.thank-you-card .message{font-size:.9375rem;line-height:1.6;color:var(--color-text-secondary);margin-bottom:1rem}.thank-you-card .card-footer{padding-top:1rem;border-top:1px solid var(--color-border-light);margin-top:0}.to-label{display:flex;align-items:center;gap:.375rem;font-size:.8125rem;color:var(--color-text-muted)}.empty-state{text-align:center;padding:4rem 2rem;color:var(--color-text-muted)}.empty-state h3{margin:1rem 0 .5rem;color:var(--color-text)}.empty-state p{margin-bottom:1.5rem}.thank-you-cta{background:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:2rem;text-align:center}.thank-you-cta h3{font-size:1.125rem;margin-bottom:.5rem}.thank-you-cta p{color:var(--color-text-secondary);max-width:500px;margin:0 auto}.py-8{padding-top:2rem;padding-bottom:2rem}.header-title-row{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.header-title-row .header-icon{color:var(--color-primary);flex-shrink:0}.header-title-row h1{margin:0}.header-content{flex:1}.level-toggle{display:flex;gap:.5rem;background:var(--color-bg-muted);padding:.25rem;border-radius:var(--radius-lg)}.level-btn{padding:.625rem 1.25rem;border-radius:var(--radius-md);font-weight:600;font-size:.875rem;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast);border:none;background:transparent;white-space:nowrap}.level-btn:hover{color:var(--color-text)}.level-btn.active{background:#fff;color:var(--color-primary);box-shadow:var(--shadow-sm)}.revision-filters{display:flex;flex-wrap:wrap;align-items:center;gap:1rem;margin-bottom:2rem}.filter-group-inline{display:flex;align-items:center;gap:.5rem}.filter-group-inline label{font-size:.875rem;font-weight:600;color:var(--color-text-secondary)}.filter-select-light{padding:.625rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:.875rem;font-weight:500;background:#fff;cursor:pointer;min-width:150px}.card-viewer{display:flex;align-items:center;justify-content:center;gap:1rem;margin-bottom:2rem;padding:1rem}.nav-arrow{width:48px;height:48px;border-radius:50%;background:#fff;border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);flex-shrink:0;color:var(--color-text-secondary)}.nav-arrow:hover{border-color:var(--color-primary);color:var(--color-primary);background:var(--color-primary-light)}.revision-card-container{flex:1;max-width:500px;text-align:center}.revision-card{background:#fff;border:2px solid var(--color-border);border-radius:var(--radius-2xl);padding:2rem;position:relative;overflow:hidden}.revision-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--color-primary),var(--color-accent))}.card-title-big{font-family:var(--font-display);font-size:1.25rem;font-weight:600;color:var(--color-text);margin-bottom:1rem}.card-content-box{background:var(--color-bg-subtle);padding:1.5rem;border-radius:var(--radius-lg);margin-bottom:1rem}.card-content-box pre{font-family:Courier New,monospace;font-size:.9375rem;white-space:pre-wrap;word-break:break-word;margin:0;text-align:left}.card-action-btn{width:40px;height:40px;border-radius:var(--radius-lg);border:1px solid var(--color-border);background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);color:var(--color-text-secondary)}.card-action-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.card-action-btn.saved{background:var(--color-success-light);border-color:var(--color-success);color:var(--color-success)}.card-action-btn.copied{background:var(--color-primary-light);border-color:var(--color-primary);color:var(--color-primary)}.card-action-btn.whatsapp{background:#25d366;border-color:#25d366;color:#fff}.card-action-btn.whatsapp:hover{background:#20bd5a}.card-counter{margin-top:1rem;font-size:.875rem;font-weight:600;color:var(--color-text-muted)}.no-cards{text-align:center;padding:4rem 2rem;color:var(--color-text-muted)}.no-cards svg{margin-bottom:1rem}.cards-grid-section{margin-top:2rem}.cards-grid-section h3{display:flex;align-items:center;gap:.5rem;font-size:1rem;font-weight:600;margin-bottom:1rem}.revision-cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}.revision-card-mini{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1rem;cursor:pointer;transition:all var(--transition-fast);position:relative}.revision-card-mini:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md)}.revision-card-mini.active{border-color:var(--color-primary);background:var(--color-primary-light)}.mini-category{display:inline-block;font-size:.6875rem;font-weight:600;text-transform:uppercase;color:var(--color-primary);background:var(--color-primary-light);padding:.125rem .5rem;border-radius:var(--radius-sm);margin-bottom:.5rem}.revision-card-mini h4{font-size:.875rem;font-weight:600;color:var(--color-text);margin:0}.revision-card-mini .saved-indicator{position:absolute;top:.75rem;right:.75rem;color:var(--color-success)}.saved-cards-section{margin-top:2rem;background:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem}.saved-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.saved-header h3{display:flex;align-items:center;gap:.5rem;font-size:1rem;font-weight:600;margin:0}.saved-cards-list{display:flex;flex-direction:column;gap:.5rem}.saved-card-item{display:flex;align-items:center;justify-content:space-between;background:#fff;padding:.75rem 1rem;border-radius:var(--radius-lg);border:1px solid var(--color-border)}.saved-card-info h4{font-size:.875rem;font-weight:600;color:var(--color-text);margin:0 0 .125rem}.saved-card-info span{font-size:.75rem;color:var(--color-text-muted)}.remove-btn{width:28px;height:28px;border-radius:var(--radius-md);border:none;background:#fef2f2;color:#ef4444;font-size:1.25rem;cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center}.remove-btn:hover{background:#fee2e2}.hours-selector{display:flex;gap:.5rem;flex-wrap:wrap}.hour-btn{padding:.625rem 1rem;border-radius:var(--radius-lg);font-weight:600;font-size:.875rem;color:var(--color-text-secondary);background:var(--color-bg-muted);border:1px solid transparent;cursor:pointer;transition:all var(--transition-fast);min-width:50px}.hour-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.hour-btn.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.planner-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-bottom:2rem}@media(min-width:768px){.planner-grid{grid-template-columns:350px 1fr}}.setup-panel{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;height:-moz-fit-content;height:fit-content}.setup-panel h3{display:flex;align-items:center;gap:.5rem;font-size:1rem;font-weight:600;margin-bottom:1.5rem;color:var(--color-text)}.schedule-panel{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem}.countdown{display:flex;align-items:center;gap:.375rem;font-size:.8125rem;color:var(--color-primary);font-weight:600;margin-top:.5rem;padding:.5rem .75rem;background:var(--color-primary-light);border-radius:var(--radius-md)}.countdown.urgent{background:#fef2f2;color:#ef4444}.subject-input{display:flex;gap:.5rem}.subject-input input{flex:1;padding:.75rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:.9375rem}.add-btn{width:44px;height:44px;border-radius:var(--radius-lg);background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);border:none;flex-shrink:0}.add-btn:hover{background:var(--color-primary-dark)}.subject-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.75rem}.subject-tag{display:flex;align-items:center;gap:.375rem;background:var(--color-bg-muted);padding:.5rem .75rem;border-radius:var(--radius-full);font-size:.8125rem;font-weight:500}.subject-tag button{width:18px;height:18px;border-radius:50%;background:#0000001a;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.subject-tag button:hover{background:#ef4444;color:#fff}.hint-text{font-size:.75rem;color:var(--color-text-muted);margin-top:.5rem}.progress-section{margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--color-border-light)}.progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.progress-header h3{display:flex;align-items:center;gap:.5rem;font-size:.9375rem;font-weight:600;margin:0}.progress-percent{font-size:1.25rem;font-weight:700;color:var(--color-primary)}.progress-bar-container{width:100%;height:10px;background:var(--color-bg-muted);border-radius:var(--radius-full);overflow:hidden}.progress-stats{font-size:.75rem;color:var(--color-text-muted);margin-top:.5rem}.schedule-actions{display:flex;gap:.75rem;margin-bottom:1.5rem}.action-btn{display:flex;align-items:center;gap:.375rem;padding:.5rem 1rem;border-radius:var(--radius-lg);font-size:.8125rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);border:1px solid var(--color-border);background:#fff;color:var(--color-text-secondary)}.action-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.action-btn.whatsapp{background:#25d366;border-color:#25d366;color:#fff}.action-btn.whatsapp:hover{background:#20bd5a}.schedule-list h3{display:flex;align-items:center;gap:.5rem;font-size:.9375rem;font-weight:600;margin-bottom:1rem}.schedule-item{display:flex;align-items:center;gap:1rem;padding:.875rem 1rem;background:var(--color-bg-subtle);border-radius:var(--radius-lg);margin-bottom:.5rem;cursor:pointer;transition:all var(--transition-fast);border:1px solid transparent}.schedule-item:hover{background:var(--color-bg-muted)}.schedule-item.today{border-color:var(--color-primary);background:var(--color-primary-light)}.schedule-item.completed{opacity:.7}.schedule-item.completed .subject-name{text-decoration:line-through}.schedule-item.missed{border-color:#fecaca;background:#fef2f2}.schedule-check{width:24px;height:24px;flex-shrink:0}.check-empty{width:20px;height:20px;border:2px solid var(--color-border);border-radius:50%}.check-icon{color:var(--color-success)}.schedule-date{min-width:70px}.date-day{display:block;font-size:.75rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase}.date-full{font-size:.8125rem;color:var(--color-text)}.schedule-subject{flex:1}.subject-name{display:block;font-weight:600;font-size:.875rem;color:var(--color-text)}.subject-hours{font-size:.75rem;color:var(--color-text-muted)}.today-badge{font-size:.6875rem;font-weight:700;text-transform:uppercase;background:var(--color-primary);color:#fff;padding:.25rem .5rem;border-radius:var(--radius-full)}.missed-icon{color:#ef4444}.empty-schedule{text-align:center;padding:3rem 2rem;color:var(--color-text-muted)}.empty-schedule svg{color:var(--color-border);margin-bottom:1rem}.empty-schedule h3{color:var(--color-text);margin-bottom:.5rem}.study-tips{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem}.study-tips h3{display:flex;align-items:center;gap:.5rem;font-size:1rem;font-weight:600;margin-bottom:1rem}.tips-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}.tip-card{display:flex;align-items:flex-start;gap:.75rem;padding:1rem;background:var(--color-bg-subtle);border-radius:var(--radius-lg)}.tip-card .tip-icon{color:var(--color-primary);flex-shrink:0}.tip-card p{font-size:.875rem;color:var(--color-text-secondary);margin:0;line-height:1.5}.channels-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}.channel-card{display:flex;align-items:center;gap:1rem;padding:1rem;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.channel-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md)}.channel-icon{width:48px;height:48px;border-radius:var(--radius-lg);background:red;color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}.channel-info{flex:1;min-width:0}.channel-info h4{font-size:.9375rem;font-weight:600;color:var(--color-text);margin:0 0 .25rem}.channel-info p{font-size:.8125rem;color:var(--color-text-muted);margin:0 0 .375rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.channel-lang{font-size:.6875rem;font-weight:600;text-transform:uppercase;color:var(--color-primary);background:var(--color-primary-light);padding:.125rem .5rem;border-radius:var(--radius-sm)}.external-icon{color:var(--color-text-muted);flex-shrink:0}.filter-row{display:flex;flex-wrap:wrap;gap:1rem;align-items:center}.search-box{display:flex;align-items:center;gap:.5rem;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:.625rem 1rem;flex:1;min-width:200px;max-width:300px}.search-box input{border:none;outline:none;flex:1;font-size:.875rem}.search-box svg{color:var(--color-text-muted);flex-shrink:0}.subject-pills{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:2rem}.subject-pill{padding:.5rem 1rem;border-radius:var(--radius-full);font-size:.8125rem;font-weight:600;color:var(--color-text-secondary);background:var(--color-bg-muted);border:1px solid transparent;cursor:pointer;transition:all var(--transition-fast)}.subject-pill:hover{border-color:var(--color-primary);color:var(--color-primary)}.subject-pill.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.video-thumbnail{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,var(--color-bg-muted),var(--color-bg));display:flex;align-items:center;justify-content:center}.play-overlay{width:56px;height:56px;border-radius:50%;background:var(--color-primary);display:flex;align-items:center;justify-content:center;color:#fff;opacity:.9;transition:all var(--transition-fast)}.video-card:hover .play-overlay{transform:scale(1.1);opacity:1}.video-duration{position:absolute;bottom:.5rem;right:.5rem;display:flex;align-items:center;gap:.25rem;background:#000c;color:#fff;padding:.25rem .5rem;border-radius:var(--radius-sm);font-size:.75rem;font-weight:600}.video-info{padding:1rem}.video-info h4{font-size:.9375rem;font-weight:600;color:var(--color-text);margin:0 0 .5rem;line-height:1.4}.video-meta{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.channel-name{font-size:.8125rem;color:var(--color-text-muted)}.lang-badge{font-size:.6875rem;font-weight:600;text-transform:uppercase;padding:.125rem .5rem;border-radius:var(--radius-sm)}.lang-badge.sinhala{background:#fef3c7;color:#92400e}.lang-badge.english{background:#dbeafe;color:#1e40af}.lang-badge.tamil{background:#dcfce7;color:#166534}.no-videos{grid-column:1 / -1;text-align:center;padding:4rem 2rem;color:var(--color-text-muted)}.no-videos svg{margin-bottom:1rem}.search-tip{background:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.5rem;margin-top:2rem;text-align:center}.search-tip h3{display:flex;align-items:center;justify-content:center;gap:.5rem;font-size:1rem;font-weight:600;margin-bottom:.5rem}.search-tip p{color:var(--color-text-secondary);margin-bottom:1rem}.search-suggestions{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center}.search-suggestions a{display:inline-flex;align-items:center;gap:.375rem;padding:.5rem 1rem;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-full);font-size:.8125rem;font-weight:500;color:var(--color-text);transition:all var(--transition-fast)}.search-suggestions a:hover{border-color:var(--color-primary);color:var(--color-primary)}.grade-tabs{display:flex;gap:.5rem;margin-bottom:2rem;flex-wrap:wrap}.grade-tab{padding:.75rem 1.25rem;border-radius:var(--radius-lg);font-weight:600;font-size:.875rem;color:var(--color-text-secondary);background:var(--color-bg-muted);border:1px solid transparent;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.grade-tab:hover{border-color:var(--color-primary);color:var(--color-primary)}.grade-tab.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.resource-grid{display:grid;grid-template-columns:1fr;gap:1rem}@media(min-width:640px){.resource-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.resource-grid{grid-template-columns:repeat(3,1fr)}}.resource-card{display:flex;align-items:flex-start;gap:1rem;padding:1.25rem;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);transition:all var(--transition-fast);text-decoration:none}.resource-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.resource-icon{width:48px;height:48px;border-radius:var(--radius-lg);background:red;color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}.resource-content{flex:1;min-width:0}.resource-content h4{font-size:.9375rem;font-weight:600;color:var(--color-text);margin:0 0 .375rem;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.resource-channel{font-size:.8125rem;color:var(--color-text-muted);margin:0 0 .5rem}.resource-meta{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.resource-duration{display:flex;align-items:center;gap:.25rem;font-size:.75rem;font-weight:500;color:var(--color-text-secondary);background:var(--color-bg-muted);padding:.25rem .5rem;border-radius:var(--radius-md)}.resource-action{color:var(--color-text-muted);flex-shrink:0;transition:color var(--transition-fast)}.resource-card:hover .resource-action{color:var(--color-primary)}.page-header{margin-bottom:2rem}.page-header-top{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:.75rem}.page-description{color:var(--color-text-secondary);font-size:1rem;line-height:1.6;max-width:600px}@media(max-width:768px){.page-header-top{flex-direction:column;gap:1rem}.page-header-top .btn-primary{width:100%;justify-content:center}.header-title-row{flex-wrap:wrap}.header-title-row h1{font-size:1.5rem}.header-title-row .header-icon{width:24px;height:24px}.page-description{font-size:.9375rem}.resource-grid{grid-template-columns:1fr}.resource-card{padding:1rem}.resource-icon{width:40px;height:40px}.resource-content h4{font-size:.875rem}.channels-grid{grid-template-columns:1fr}.channel-card{padding:1rem;flex-direction:row;align-items:center;position:relative}.channel-icon{width:44px;height:44px}.channel-info{flex:1}.channel-info h4{font-size:.9375rem}.channel-info p{font-size:.75rem;white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.external-icon{display:none}.official-channels{padding:1rem;margin-bottom:1.5rem}.official-channels h3{font-size:1rem;margin-bottom:1rem}.subject-pills{gap:.375rem;margin-bottom:1.5rem}.subject-pill{padding:.375rem .75rem;font-size:.75rem}.grade-tabs{gap:.375rem;margin-bottom:1.5rem;overflow-x:auto;padding-bottom:.5rem;-webkit-overflow-scrolling:touch}.grade-tab{padding:.5rem 1rem;font-size:.8125rem;flex-shrink:0}.filter-row{flex-direction:column;align-items:stretch;gap:.75rem}.video-filters{flex-direction:column;gap:.75rem}.video-filters .filter-row{width:100%}.search-box{max-width:100%;min-width:0}.filter-select-light{width:100%;min-width:auto}.planner-grid{grid-template-columns:1fr}.setup-panel,.schedule-panel{padding:1.25rem}.setup-panel h3{font-size:.9375rem}.hours-selector{gap:.375rem}.hour-btn{padding:.5rem .75rem;font-size:.8125rem;min-width:44px}.schedule-item{padding:.75rem;gap:.75rem}.schedule-date{min-width:60px}.date-day{font-size:.6875rem}.date-full{font-size:.75rem}.card-viewer{flex-direction:column;gap:1rem;padding:.5rem}.nav-arrow{width:40px;height:40px}.revision-card-container{max-width:100%}.revision-card{padding:1.25rem}.card-title-big{font-size:1.125rem}.card-content-box{padding:1rem}.card-content-box pre{font-size:.8125rem}.card-actions-row{gap:.75rem}.revision-cards-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.75rem}.revision-card-mini{padding:.75rem}.revision-card-mini h4{font-size:.8125rem}.revision-filters{flex-direction:column;align-items:stretch;gap:.75rem}.level-toggle{width:100%;justify-content:center}.level-btn{flex:1;text-align:center;padding:.625rem .75rem}.filter-group-inline{flex-direction:column;align-items:stretch;gap:.375rem}.filter-group-inline select{width:100%}.saved-cards-section{padding:1rem}.saved-header{flex-direction:column;gap:.75rem;align-items:stretch}.saved-header .btn-secondary{width:100%;justify-content:center}.impact-stats-grid{grid-template-columns:repeat(2,1fr);gap:.75rem}.impact-stat-card{padding:1rem;flex-direction:column;text-align:center;gap:.75rem}.impact-stat-card .stat-icon{width:44px;height:44px}.stat-number{font-size:1.25rem}.charts-row{grid-template-columns:1fr}.chart-card{padding:1.25rem}.chart-card h3{font-size:.9375rem}.gap-cards{grid-template-columns:1fr}.gap-card{padding:1rem}.gap-card h4{font-size:.8125rem}.bottom-row{grid-template-columns:1fr}.activity-card,.contributors-card{padding:1.25rem}.activity-item,.contributor-item{padding:.625rem}.impact-cta{padding:1.5rem}.impact-cta h3{font-size:1.125rem}.thank-you-stats{flex-direction:column;gap:1rem;padding:1.25rem}.thank-you-stats .stat-item{flex-direction:row;justify-content:space-between;width:100%}.thank-you-form-container{padding:1.25rem}.thank-you-form .form-row{flex-direction:column}.thank-you-grid{grid-template-columns:1fr}.thank-you-card{padding:1.25rem}.thank-you-cta{padding:1.5rem}.search-tip{padding:1.25rem}.search-tip h3{font-size:.9375rem}.search-suggestions{flex-direction:column;gap:.5rem}.search-suggestions a{width:100%;justify-content:center}.study-tips{padding:1.25rem}.study-tips h3{font-size:.9375rem}.tips-grid{grid-template-columns:1fr}.tip-card{padding:.875rem}}@media(max-width:480px){.container{padding:0 1rem}.py-8{padding-top:1.5rem;padding-bottom:1.5rem}.header-title-row h1{font-size:1.25rem}.page-description{font-size:.875rem}.impact-stats-grid{grid-template-columns:1fr}.impact-stat-card{flex-direction:row;text-align:left;padding:.875rem}.impact-stat-card .stat-icon{width:40px;height:40px}.stat-number{font-size:1.125rem}.stat-label{font-size:.6875rem}.revision-cards-grid{grid-template-columns:1fr}.level-btn{font-size:.75rem;padding:.5rem}.resource-card{flex-direction:column;text-align:center;padding:1rem}.resource-icon{margin:0 auto}.resource-content{text-align:center}.resource-meta{justify-content:center}.resource-action{align-self:center;margin-top:.5rem}.grade-tabs{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}.grade-tabs::-webkit-scrollbar{display:none}.grade-tab{white-space:nowrap;padding:.5rem .875rem;font-size:.75rem}.channel-card{padding:.875rem;gap:.75rem}.channel-icon{width:40px;height:40px}.channel-info h4{font-size:.875rem}.channel-info p{font-size:.6875rem}.channel-lang{font-size:.625rem;padding:.125rem .375rem}.gap-analysis-section h3{font-size:.9375rem;flex-wrap:wrap}.gap-card{padding:.875rem}.gap-card h4,.gap-card p{font-size:.75rem}.gap-tag{font-size:.6875rem;padding:.1875rem .5rem}.activity-card h3,.contributors-card h3{font-size:.875rem}.activity-item{padding:.5rem;gap:.5rem}.activity-icon{width:28px;height:28px}.activity-title{font-size:.8125rem}.activity-meta,.activity-time{font-size:.6875rem}.contributor-item{padding:.5rem;gap:.5rem}.rank{font-size:1rem;width:28px}.contributor-name{font-size:.8125rem}.contributor-count{font-size:.6875rem}.bar-item{gap:.5rem}.bar-label{width:30px;font-size:.6875rem}.bar-container{height:16px}.bar-value{width:24px;font-size:.75rem}.impact-cta{padding:1.25rem}.impact-cta h3{font-size:1rem}.impact-cta p,.search-tip h3{font-size:.875rem}.search-tip p{font-size:.8125rem}.search-suggestions a{font-size:.75rem;padding:.5rem .75rem}.subject-pills{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding-bottom:.5rem}.subject-pills::-webkit-scrollbar{display:none}.subject-pill{flex-shrink:0;white-space:nowrap}.no-videos{padding:2rem 1rem}.no-videos p{font-size:.875rem}}.page-loader{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:50vh;gap:1rem;color:var(--color-text-secondary)}.loader-spinner{width:40px;height:40px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.browse-section-header{margin-bottom:2.5rem}.browse-section-header h2{font-family:var(--font-display);font-weight:700;font-size:1.875rem;color:var(--color-text)}.browse-section-header p{color:var(--color-text-secondary)}.browse-grade-cards{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem}.browse-grade-card{display:flex;align-items:center;gap:1rem;padding:1.25rem;background:var(--color-surface, #fff);border:1px solid var(--color-border);border-radius:16px;text-decoration:none;color:inherit;transition:all .2s ease;position:relative;overflow:hidden}.browse-grade-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--card-accent, var(--color-primary))}.browse-grade-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--card-accent, var(--color-primary))}.grade-card-info{flex:1;min-width:0}.grade-card-info h3{font-size:.95rem;font-weight:600;color:var(--color-text);margin:0 0 .125rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.grade-card-label{display:block;font-size:.7rem;color:var(--color-text-secondary);margin-bottom:.25rem}.grade-card-count{display:inline-block;font-size:.7rem;font-weight:600;color:var(--card-accent, var(--color-primary));background:#0891b21a;padding:.125rem .5rem;border-radius:999px}.grade-card-arrow{font-size:1.25rem;color:var(--color-text-secondary);transition:transform .2s;flex-shrink:0}.browse-grade-card:hover .grade-card-arrow{transform:translate(4px);color:var(--card-accent, var(--color-primary))}@media(max-width:1100px){.browse-grade-cards{grid-template-columns:repeat(3,1fr)}}@media(max-width:768px){.browse-grade-cards{grid-template-columns:repeat(2,1fr);gap:.75rem}.browse-grade-card{padding:1rem}.grade-card-icon{font-size:2rem}.grade-card-info h3{font-size:.875rem}.grade-card-label,.grade-card-arrow{display:none}}@media(max-width:400px){.browse-grade-cards{grid-template-columns:1fr 1fr}.browse-grade-card{flex-direction:column;text-align:center;padding:.75rem;gap:.5rem}.browse-grade-card:before{width:100%;height:3px;bottom:auto}.grade-card-icon{font-size:1.75rem}.grade-card-info h3{font-size:.75rem}}.footer{background:linear-gradient(180deg,#f8fafc,#f1f5f9);border-top:1px solid #e2e8f0;margin-top:auto}.footer-container{max-width:1200px;margin:0 auto;padding:3rem 1.5rem 1.5rem}.footer-content{display:grid;grid-template-columns:2fr 1fr 1fr;gap:3rem;margin-bottom:2rem}.footer-brand{max-width:320px}.footer-logo{display:flex;align-items:center;gap:.5rem;font-size:1.25rem;font-weight:700;color:var(--color-primary);margin-bottom:1rem}.footer-mission{color:#64748b;font-size:.95rem;line-height:1.6;margin-bottom:1.25rem}.footer-social{display:flex;gap:.75rem}.social-link{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;background:#fff;color:#64748b;border:1px solid #e2e8f0;transition:all .2s ease}.social-link:hover{background:var(--color-primary);color:#fff;border-color:var(--color-primary);transform:translateY(-2px);box-shadow:0 4px 12px #0891b240}.footer-links{display:flex;flex-direction:column}.footer-heading{font-size:.875rem;font-weight:600;color:#1e293b;text-transform:uppercase;letter-spacing:.05em;margin-bottom:1rem}.footer-nav{display:flex;flex-direction:column;gap:.625rem}.footer-link{color:#64748b;font-size:.9rem;text-decoration:none;transition:color .2s ease;width:-moz-fit-content;width:fit-content}.footer-link:hover{color:var(--color-primary)}.footer-bottom{padding-top:1.5rem;border-top:1px solid #e2e8f0;text-align:center}.footer-copyright{color:#64748b;font-size:.875rem;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:.25rem}.heart-icon{color:#ef4444;fill:#ef4444;animation:heartbeat 1.5s ease infinite}@keyframes heartbeat{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.developer-link{color:var(--color-primary);text-decoration:none;font-weight:500;transition:opacity .2s ease}.developer-link:hover{opacity:.8;text-decoration:underline}@media(max-width:768px){.footer-container{padding:2rem 1rem 1rem}.footer-content{grid-template-columns:1fr 1fr;gap:2rem}.footer-brand{grid-column:1 / -1;max-width:100%;text-align:center}.footer-logo,.footer-social{justify-content:center}.footer-links{text-align:center}.footer-nav{align-items:center}}@media(max-width:480px){.footer-content{grid-template-columns:1fr;gap:1.5rem}.footer-heading{margin-bottom:.75rem}.footer-copyright{font-size:.8rem;flex-direction:column;gap:.5rem}}