@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes floatSlow{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes pulseRing{0%{transform:scale(1);opacity:.6}to{transform:scale(2.2);opacity:0}}@keyframes slideRight{0%{width:0}to{width:100%}}@keyframes popIn{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulseGlow{0%,to{box-shadow:0 0 #2a9d8f4d}50%{box-shadow:0 0 0 8px #2a9d8f00}}:root{--bg-color: #f5f0e8;--card-bg: #ffffff;--text-color: #1a1a2e;--text-secondary: #6b6b7b;--text-muted: #9b9bab;--primary-color: #2a9d8f;--teal: #2a9d8f;--teal-soft: rgba(42, 157, 143, .12);--copper: #c47f5a;--copper-soft: rgba(196, 127, 90, .15);--ink: #1a1a2e;--ink-light: #2d2d4a;--parchment: #f5f0e8;--parchment-dark: #e8e0d0;--sage: #7c9885;--sage-soft: rgba(124, 152, 133, .12);--error: #c44f4f;--error-soft: rgba(196, 79, 79, .08);--white: #ffffff;--overlay: rgba(26, 26, 46, .6);--color-blue: #2a9d8f;--color-green: #2a9d8f;--color-red: #c44f4f;--color-yellow: #c47f5a;--color-purple: #7c9885;--border-color: #e8e0d0;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 2px 12px rgba(26, 26, 46, .04);--shadow-md: 0 10px 24px rgba(26, 26, 46, .08)}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{margin:0;min-height:100%}body{min-width:320px;background:var(--bg-color);color:var(--text-color);font-family:DM Sans,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}::selection{background:var(--teal-soft);color:var(--text-color)}h1,h2,h3,h4,h5,h6,p{margin-top:0}button,input,textarea,select{font:inherit}input,textarea,select{width:100%;padding:12px 16px;border:1.5px solid var(--border-color);border-radius:var(--radius-md);background:#fff;color:var(--text-color);font-family:"Source Serif 4",Georgia,serif;font-size:15px;outline:none;transition:border-color .2s ease}input:focus,textarea:focus,select:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #2a9d8f1f}textarea{resize:vertical}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#d4cfc5;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#b8b2a6}[data-theme=dark]{--bg-color: #1e1e36;--card-bg: #262645;--text-color: #ededf0;--text-secondary: #b8b8d0;--text-muted: #9494b0;--border-color: #3d3d5c;--primary-color: #5cc4b6;--teal: #5cc4b6;--teal-soft: rgba(92, 196, 182, .18);--copper: #e0a87a;--copper-soft: rgba(224, 168, 122, .18);--ink: #ededf0;--ink-light: #d0d0e0;--parchment: #1e1e36;--parchment-dark: #3d3d5c;--sage: #a8c8b0;--sage-soft: rgba(168, 200, 176, .15);--error: #f06565;--error-soft: rgba(240, 101, 101, .15);--white: #262645;--overlay: rgba(0, 0, 0, .65);--color-blue: #5cc4b6;--color-green: #5cc4b6;--color-red: #f06565;--color-yellow: #e0a87a;--color-purple: #a8c8b0;--shadow-sm: 0 2px 12px rgba(0, 0, 0, .25);--shadow-md: 0 10px 24px rgba(0, 0, 0, .35)}[data-theme=dark] body{background:var(--bg-color);color:var(--text-color)}[data-theme=dark] input,[data-theme=dark] textarea,[data-theme=dark] select{background:#262645;color:#ededf0;border-color:#3d3d5c}[data-theme=dark] input:focus,[data-theme=dark] textarea:focus,[data-theme=dark] select:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #5cc4b633}[data-theme=dark] ::-webkit-scrollbar-thumb{background:#4d4d6c}@media(max-width:768px){body{font-size:14px}.lesson-editor-grid,.student-history-grid{grid-template-columns:1fr!important}.progress-table-header,.progress-table-row{grid-template-columns:1fr 70px 60px 60px!important}}