@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap";:root{--bg-primary:#f8f7ff;--bg-secondary:#f0efff;--bg-card:#fff;--bg-card-hover:#f8f7ff;--bg-elevated:#fff;--accent-primary:#9b86bd;--accent-primary-light:#e2d5f3;--accent-secondary:#00cec9;--accent-warning:#fdcb6e;--accent-danger:#ff6b6b;--accent-success:#00b894;--accent-blue:#8f94fb;--accent-pink:#fd79a8;--color-subject:#8f94fb;--color-verb:#ff6b6b;--text-primary:#2d3436;--text-secondary:#636e72;--text-muted:#a4b0be;--text-inverse:#fff;--gradient-primary:linear-gradient(135deg, #8b74b2, #c6b3df);--gradient-secondary:linear-gradient(135deg, #00cec9, #55efc4);--gradient-warm:linear-gradient(135deg, #fd79a8, #fdcb6e);--gradient-cool:linear-gradient(135deg, #8f94fb, #9b86bd);--gradient-card:linear-gradient(145deg, #fff, #fafafa);--border-color:#9b86bd33;--border-active:#9b86bd80;--shadow-sm:0 2px 8px #9b86bd14;--shadow-md:0 4px 16px #9b86bd1f;--shadow-lg:0 8px 32px #9b86bd29;--shadow-glow:0 0 20px #9b86bd4d;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--font-main:"Inter", -apple-system, BlinkMacSystemFont, sans-serif}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%}body{font-family:var(--font-main);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6;overflow-x:hidden}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.text-gradient{background:var(--gradient-primary);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.text-gradient-secondary{background:var(--gradient-secondary);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.glass{-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);background:#ffffffd9}.glass-light{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--border-color);background:#ffffff80}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse-glow{0%,to{box-shadow:0 0 5px #6c5ce733}50%{box-shadow:0 0 20px #6c5ce766}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.animate-fade-in{animation:.4s ease-out fadeIn}.animate-slide-up{animation:.5s ease-out slideUp}.animate-slide-in-right{animation:.4s ease-out slideInRight}.animate-float{animation:3s ease-in-out infinite float}.animate-spin{animation:1s linear infinite spin}.stagger-1{animation-delay:50ms}.stagger-2{animation-delay:.1s}.stagger-3{animation-delay:.15s}.stagger-4{animation-delay:.2s}.stagger-5{animation-delay:.25s}.subject-highlight{color:var(--color-subject);background:#74b9ff1a;border-radius:4px;padding:1px 4px;font-weight:700}.verb-highlight{color:var(--color-verb);background:#ff6b6b1a;border-radius:4px;padding:1px 4px;font-weight:700}.quiz-option{background:var(--bg-card);border:2px solid var(--border-color);border-radius:var(--radius-md);width:100%;color:var(--text-primary);cursor:pointer;text-align:left;padding:14px 20px;font-size:15px;transition:all .2s;display:block}.quiz-option:hover{border-color:var(--accent-primary);background:var(--bg-card-hover);transform:translate(4px)}.quiz-option.correct{border-color:var(--accent-success);color:var(--accent-success);background:#00b89426}.quiz-option.incorrect{border-color:var(--accent-danger);color:var(--accent-danger);background:#ff6b6b26}.quiz-option.disabled{pointer-events:none;opacity:.6}input,textarea{font-family:var(--font-main)}input[type=text],input[type=password],textarea{background:var(--bg-card);border:2px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);width:100%;padding:12px 16px;font-size:15px;transition:border-color .2s}input[type=text]:focus,input[type=password]:focus,textarea:focus{border-color:var(--accent-primary);outline:none;box-shadow:0 0 0 3px #6c5ce726}textarea{resize:vertical;min-height:120px}.tab-nav{background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-color);gap:4px;padding:4px;display:flex}.tab-btn{border-radius:var(--radius-md);color:var(--text-muted);cursor:pointer;white-space:nowrap;background:0 0;border:none;flex:1;padding:10px 16px;font-size:13px;font-weight:600;transition:all .2s}.tab-btn:hover{color:var(--text-primary);background:#ffffff0d}.tab-btn.active{background:var(--accent-primary);color:#fff;box-shadow:var(--shadow-sm)}.draggable-chip{background:var(--bg-card);border:2px solid var(--border-color);border-radius:var(--radius-full);color:var(--text-primary);cursor:grab;-webkit-user-select:none;user-select:none;align-items:center;padding:8px 16px;font-size:14px;transition:all .2s;display:inline-flex}.draggable-chip:hover{border-color:var(--accent-primary);background:var(--bg-card-hover)}.draggable-chip.placed{border-color:var(--accent-primary);background:#6c5ce726}.pdf-btn{border-radius:var(--radius-full);color:var(--accent-danger);cursor:pointer;background:#ff6b6b1a;border:1px solid #ff6b6b4d;align-items:center;gap:6px;padding:8px 16px;font-size:13px;font-weight:600;transition:all .2s;display:inline-flex}.pdf-btn:hover{background:#ff6b6b33;transform:translateY(-1px)}.speaker-btn{border-radius:var(--radius-full);width:32px;height:32px;color:var(--accent-primary);cursor:pointer;background:#6c5ce71a;border:1px solid #6c5ce733;flex-shrink:0;justify-content:center;align-items:center;transition:all .2s;display:inline-flex}.speaker-btn:hover{background:#6c5ce733;transform:scale(1.1)}.speaker-btn.playing{background:var(--accent-primary);color:#fff;animation:1.5s infinite pulse-glow}