:root{--green: #1c3d2e;--green-mid: #2e5e46;--green-soft: #4a8c69;--green-pale: #d4e8dc;--cream: #f5f0e8;--cream-dark: #ede7d9;--cream-deep: #e0d9cc;--terra: #c06a3e;--terra-soft: #d9895f;--terra-pale: #f5dfd4;--gold: #c9a84c;--gold-pale: #f5edda;--text: #1e2b22;--text-muted: #6b7c72;--white: #ffffff;--shadow-sm: 0 2px 8px rgba(28,61,46,.08);--shadow: 0 4px 20px rgba(28,61,46,.1);--shadow-lg: 0 8px 40px rgba(28,61,46,.14);--radius: 14px;--radius-sm: 8px;--transition: .2s ease;--success: #2e7d32}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Nunito,sans-serif;background:var(--cream);color:var(--text);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%}h1,h2,h3,h4{font-family:Cormorant Garamond,serif;line-height:1.2}.app-shell{display:flex;flex-direction:column;min-height:100vh}.topbar{background:var(--green);padding:0 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24px;height:60px}.topbar-emblem{width:34px;height:34px;font-size:16px}.topbar-name{font-size:1.2rem}.page{padding:28px 24px 48px}.page-header{flex-direction:row;align-items:flex-start;justify-content:space-between}.page-header-actions .btn{flex:0 0 auto}.page-title{font-size:1.75rem}.settings-card{max-width:560px}.course-detail-grid{grid-template-columns:1fr 1fr;gap:24px}.upload-slot-grid{grid-template-columns:1fr 1fr}.card{padding:20px}.stat-card{padding:18px 20px}.stat-value{font-size:2.2rem}.stats-row{gap:14px}.modal-overlay{align-items:center;padding:20px}.modal{border-radius:var(--radius);max-width:520px;padding:32px}.modal-wide{max-width:780px}.toast{left:50%;right:auto;transform:translate(-50%) translateY(20px);white-space:nowrap;width:auto}.toast.show{transform:translate(-50%) translateY(0)}.kanban-board{grid-template-columns:repeat(2,1fr);display:grid}.review-panel{flex-direction:row}.review-panel>:first-child{flex:1}.review-panel>:last-child{width:320px;flex-shrink:0}.frame-option img{height:70px}.login-card{padding:44px 40px;border-radius:20px}.login-title{font-size:1.9rem}.landing-container{max-width:560px}.landing-title{font-size:2.6rem}.landing-features{gap:16px}.landing-feature-card{padding:20px 16px}.course-card{padding:24px}.course-card-header{flex-direction:row;align-items:flex-start;justify-content:space-between}.course-card-title{font-size:1.35rem}}@media (min-width: 900px){.topbar{padding:0 32px}.topbar-nav-desktop{display:flex;align-items:center;gap:4px;margin-left:24px}.topbar-right-desktop{margin-left:auto;display:flex;align-items:center;gap:12px}.hamburger,.mobile-menu{display:none}.topbar-nav-desktop a{color:#f5f0e8b3;text-decoration:none;padding:6px 14px;border-radius:6px;font-size:.85rem;font-weight:600;transition:all var(--transition);letter-spacing:.02em}.topbar-nav-desktop a:hover,.topbar-nav-desktop a.active{color:var(--cream);background:#ffffff1f}.topbar-user{font-size:.8rem;color:var(--green-soft);display:flex;align-items:center;gap:6px}.topbar-signout{background:none;border:1px solid rgba(255,255,255,.2);color:#f5f0e8bf;padding:5px 12px;border-radius:6px;font-size:.78rem;font-weight:600;cursor:pointer;font-family:Nunito,sans-serif;transition:all var(--transition)}.topbar-signout:hover{background:#ffffff1a;color:var(--cream)}.page{padding:36px 32px 60px}.page-title{font-size:2rem}.page-header{margin-bottom:32px}.card{padding:24px}.card:hover{box-shadow:var(--shadow)}.stats-row{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:32px}.stat-card{padding:20px 22px}.stat-value{font-size:2.4rem}.kanban-board{grid-template-columns:repeat(4,1fr)}.kanban-col{min-height:200px;padding:14px 12px}.kanban-card{padding:14px}.kanban-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.review-panel>:last-child{width:340px}.video-row{padding:14px 16px;gap:14px}.dropzone{padding:36px 20px}.modal-title{font-size:1.6rem}}@media (min-width: 1100px){.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-sm)}.btn-terra:hover:not(:disabled){transform:translateY(-1px)}.btn-gold:hover:not(:disabled){transform:translateY(-1px)}}