@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-primary: #0f1115;--bg-secondary: #1a1d24;--bg-glass: rgba(26, 29, 36, .7);--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-primary: #6366f1;--accent-hover: #4f46e5;--accent-glow: rgba(99, 102, 241, .4);--error-color: #ef4444;--success-color: #10b981;--border-color: rgba(255, 255, 255, .08);--font-family: "Inter", system-ui, -apple-system, sans-serif;--shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, .3);--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .4);--shadow-glow: 0 0 20px var(--accent-glow);--radius-md: 12px;--radius-lg: 16px;--radius-full: 9999px;--transition-fast: .2s cubic-bezier(.4, 0, .2, 1);--transition-normal: .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.5;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.glass-panel{background:var(--bg-glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.input-group{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.25rem}.input-label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.input-field{width:100%;background:#0003;border:1px solid var(--border-color);color:var(--text-primary);padding:.75rem 1rem;border-radius:var(--radius-md);font-size:1rem;transition:var(--transition-fast);outline:none}.input-field:focus{border-color:var(--accent-primary);box-shadow:0 0 0 2px var(--accent-glow);background:#0000004d}.btn-primary{width:100%;background:var(--accent-primary);color:#fff;border:none;padding:.875rem 1.5rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition-fast);display:inline-flex;justify-content:center;align-items:center;gap:.5rem;text-decoration:none}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-glow)}.btn-primary:active{transform:translateY(1px)}.btn-outline{width:100%;background:transparent;color:var(--text-primary);border:1px solid var(--border-color);padding:.875rem 1.5rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition-fast);display:inline-flex;justify-content:center;align-items:center;gap:.5rem;text-decoration:none}.btn-outline:hover{background:#ffffff0d;border-color:var(--text-secondary)}.btn-outline:active{transform:translateY(1px)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn var(--transition-normal) forwards}.auth-layout{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem;background:radial-gradient(circle at top right,rgba(99,102,241,.15),transparent 40%),radial-gradient(circle at bottom left,rgba(99,102,241,.1),transparent 40%)}.auth-card{width:100%;max-width:420px;padding:2.5rem}.text-error{color:var(--error-color);font-size:.875rem;margin-top:.5rem;display:block}.text-success{color:var(--success-color);font-size:.875rem;margin-top:.5rem;display:block}.link{color:var(--accent-primary);text-decoration:none;font-weight:500;transition:var(--transition-fast)}.link:hover{color:var(--text-primary)}.header-actions{justify-content:flex-end}@media (max-width: 767px){.dashboard-header{flex-direction:column!important;align-items:flex-start!important;gap:1.5rem!important}.header-actions{flex-direction:column!important;width:100%!important}.header-actions button{width:100%!important;justify-content:center!important}.course-details-header{flex-direction:column!important;align-items:center!important;text-align:center!important}.course-details-actions{flex-direction:column!important;width:100%!important}.course-details-actions button{width:100%!important;justify-content:center!important}.rich-text-content{word-break:break-word;overflow-wrap:break-word}.modal-container{width:95%!important;max-height:90vh!important;overflow-y:auto!important}.hide-on-mobile{display:none!important}}.lesson-sidebar-container{width:320px;background:var(--bg-secondary);border-left:1px solid var(--border-color);overflow-y:auto}.lesson-sidebar-overlay,.lesson-sidebar-toggle-btn{display:none}@media (max-width: 1023px){.lesson-sidebar-container{position:fixed;top:0;right:0;height:100vh;z-index:100;transform:translate(100%);transition:transform .3s ease}.lesson-sidebar-container.open{transform:translate(0)}.lesson-sidebar-overlay.open{display:block;position:fixed;top:0;left:0;width:100vw;height:100vh;background:#00000080;z-index:90}.lesson-sidebar-toggle-btn{display:flex!important}}