:root{--color-subject-1: #3b82f6;--color-subject-2: #ef4444;--color-subject-3: #22c55e;--color-subject-4: #f59e0b;--color-subject-5: #8b5cf6;--color-subject-6: #ec4899;--color-subject-7: #06b6d4;--color-subject-8: #84cc16;--color-subject-9: #f97316;--color-subject-10: #6366f1;--color-bg: #f6f7fb;--color-bg-dark: #1e1f26;--color-surface: rgba(255, 255, 255, .7);--color-surface-dark: rgba(30, 31, 38, .7);--color-border: rgba(0, 0, 0, .06);--color-border-dark: rgba(255, 255, 255, .1);--color-text: #1a1a2e;--color-text-dark: #f5f5f5;--color-text-muted: #6b7280;--color-text-muted-dark: #9ca3af;--color-focus: rgba(59, 130, 246, .5);--focus-ring: 0 0 0 3px var(--color-focus);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-7: 2rem;--space-8: 3rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--shadow-hover: 0 8px 24px rgba(0, 0, 0, .12);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;--text-xs: clamp(.7rem, .65rem + .25vw, .75rem);--text-sm: clamp(.8rem, .75rem + .25vw, .875rem);--text-base: clamp(.9rem, .85rem + .25vw, 1rem);--text-lg: clamp(1rem, .95rem + .25vw, 1.125rem);--text-xl: clamp(1.125rem, 1rem + .5vw, 1.25rem);--text-2xl: clamp(1.5rem, 1.25rem + 1vw, 2rem);--glass-bg: rgba(255, 255, 255, .7);--glass-bg-dark: rgba(30, 31, 38, .7);--glass-blur: blur(12px);--glass-border: rgba(0, 0, 0, .06);--glass-border-dark: rgba(255, 255, 255, .1);--transition-fast: .15s ease;--transition-normal: .25s ease;--max-width: 1200px;--header-height: 64px;--filter-bar-height: 56px;--shelf-min-height: 120px;--book-unit: 30min;--z-filter: 10;--z-modal-backdrop: 40;--z-modal: 50;--z-toast: 60}html.dark{--color-bg: var(--color-bg-dark);--color-surface: var(--color-surface-dark);--color-border: var(--color-border-dark);--color-text: var(--color-text-dark);--color-text-muted: var(--color-text-muted-dark);--glass-bg: var(--glass-bg-dark);--glass-border: var(--glass-border-dark)}*,*:before,*:after{box-sizing:border-box}*{margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{font-family:var(--font-sans);font-size:var(--text-base);line-height:1.6;color:var(--color-text);background-color:var(--color-bg);min-height:100vh}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit;color:inherit}a{color:inherit;text-decoration:none}button{background:none;border:none;cursor:pointer}ul,ol{list-style:none}:focus-visible{outline:none;box-shadow:var(--focus-ring)}::selection{background-color:var(--color-subject-1);color:#fff}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}#root{min-height:100vh;display:flex;flex-direction:column}.app{flex:1;display:flex;flex-direction:column;max-width:var(--max-width);width:100%;margin:0 auto;padding:var(--space-4)}.app-header{text-align:center;padding:var(--space-4) 0}.app-title{font-size:var(--text-2xl);font-weight:600;color:var(--color-text)}.app-subtitle{font-size:var(--text-sm);color:var(--color-text-muted);margin-top:var(--space-1)}.filter-bar{position:sticky;top:0;z-index:var(--z-filter);display:flex;flex-wrap:wrap;gap:var(--space-3);align-items:center;padding:var(--space-3) var(--space-4);background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius-lg);margin-bottom:var(--space-4)}.filter-bar__day-pills{display:flex;flex-wrap:wrap;gap:var(--space-2)}.filter-bar__search{flex:1;min-width:200px}.shelves{display:flex;gap:var(--space-4);flex:1}@media (max-width: 640px){.shelves{flex-direction:column}}.shelf{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius-lg);min-height:var(--shelf-min-height);overflow:hidden}.shelf__label{padding:var(--space-2) var(--space-3);font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted);border-bottom:1px solid var(--glass-border);background:#00000005}.shelf__track{flex:1;display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-3);overflow-y:auto;min-height:0}.book{display:flex;flex-direction:column;padding:var(--space-3);border-radius:var(--radius-md);min-height:72px;cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition-fast);position:relative;width:100%;box-sizing:border-box}.book:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);z-index:5}.book:focus-visible{outline:none;box-shadow:var(--focus-ring);z-index:5}.book__spine{display:flex;flex-direction:column;gap:var(--space-1);width:100%;min-width:0}.book__code{font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:.05em;opacity:.9;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.book__subject{display:flex;align-items:flex-start;gap:var(--space-2);font-size:var(--text-sm);font-weight:500;line-height:1.4;min-width:0}.book__type-icon{flex-shrink:0;font-size:var(--text-base);line-height:1;margin-top:1px}.book__name{word-wrap:break-word;overflow-wrap:anywhere;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.book__time{font-size:var(--text-xs);opacity:.85;font-variant-numeric:tabular-nums;white-space:nowrap}.book__lecture{font-size:var(--text-xs);opacity:.75;word-wrap:break-word;overflow-wrap:anywhere;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-6) var(--space-4);text-align:center;color:var(--color-text-muted);height:100%;min-height:var(--shelf-min-height)}.empty-state__icon{width:48px;height:48px;opacity:.4;margin-bottom:var(--space-3)}.empty-state__message{font-size:var(--text-sm);margin-bottom:var(--space-3)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:var(--space-4);z-index:var(--z-modal-backdrop);animation:fadeIn var(--transition-fast)}.modal-panel{background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);max-width:480px;width:100%;max-height:90vh;overflow:hidden;display:flex;flex-direction:column;animation:slideUp var(--transition-normal)}@media (max-width: 640px){.modal-panel{position:fixed;bottom:0;left:0;right:0;top:auto;border-radius:var(--radius-xl) var(--radius-xl) 0 0;max-height:85vh;align-items:stretch;justify-content:flex-end}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4);border-bottom:1px solid var(--glass-border)}.modal-title{font-size:var(--text-lg);font-weight:600;color:var(--color-text)}.modal-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md);color:var(--color-text-muted);transition:background var(--transition-fast),color var(--transition-fast)}.modal-close:hover{background:#0000000d;color:var(--color-text)}.modal-body{flex:1;overflow-y:auto;padding:var(--space-4)}.modal-footer{display:flex;justify-content:flex-end;gap:var(--space-3);padding:var(--space-4);border-top:1px solid var(--glass-border)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);font-size:var(--text-sm);font-weight:500;border-radius:var(--radius-md);transition:background var(--transition-fast),color var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast);min-height:44px;min-width:44px}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-subject-1);color:#fff}.btn-primary:hover:not(:disabled){background:#2563eb;box-shadow:var(--shadow-md)}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover:not(:disabled){background:#0000000d}.btn-ghost{background:transparent;color:var(--color-text)}.btn-ghost:hover:not(:disabled){background:#0000000d}.btn-danger{background:var(--color-subject-2);color:#fff}.btn-danger:hover:not(:disabled){background:#dc2626;box-shadow:var(--shadow-md)}.btn-icon{padding:var(--space-2)}.form-group{display:flex;flex-direction:column;gap:var(--space-1);margin-bottom:var(--space-4)}.form-label{font-size:var(--text-sm);font-weight:500;color:var(--color-text)}.form-input,.form-select,.form-textarea{width:100%;padding:var(--space-2) var(--space-3);font-size:var(--text-base);border:1px solid var(--color-border);border-radius:var(--radius-md);background:#fff;color:var(--color-text);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--color-subject-1);box-shadow:0 0 0 3px var(--color-focus)}.form-input::placeholder{color:var(--color-text-muted)}.form-error{font-size:var(--text-xs);color:var(--color-subject-2)}.form-row{display:flex;gap:var(--space-3)}.form-row .form-group{flex:1}.day-pills{display:flex;flex-wrap:wrap;gap:var(--space-2)}.day-pill{padding:var(--space-1) var(--space-3);font-size:var(--text-xs);font-weight:500;border-radius:var(--radius-full);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-muted);transition:all var(--transition-fast);min-height:36px}.day-pill:hover{background:#0000000d}.day-pill.active{background:var(--color-subject-1);border-color:var(--color-subject-1);color:#fff}.day-pill:focus-visible{outline:none;box-shadow:var(--focus-ring)}.search-input{width:100%;padding:var(--space-2) var(--space-3);font-size:var(--text-sm);border:1px solid var(--color-border);border-radius:var(--radius-md);background:#fff;color:var(--color-text);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.search-input:focus{outline:none;border-color:var(--color-subject-1);box-shadow:0 0 0 3px var(--color-focus)}.search-input::placeholder{color:var(--color-text-muted)}.badge{display:inline-flex;align-items:center;gap:var(--space-1);padding:var(--space-1) var(--space-2);font-size:var(--text-xs);font-weight:500;border-radius:var(--radius-full);text-transform:capitalize}.badge-lecture{background:#3b82f626;color:#2563eb}.badge-lab{background:#ef444426;color:#dc2626}.badge-tutorial{background:#f59e0b26;color:#d97706}.badge-exam{background:#ec489926;color:#db2777}.quick-launch{display:flex;flex-direction:column;gap:var(--space-2);margin-top:var(--space-4)}.quick-launch__btn{display:flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3);font-size:var(--text-sm);font-weight:500;border-radius:var(--radius-md);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);transition:all var(--transition-fast);text-align:left;min-height:48px}.quick-launch__btn:hover{background:#0000000d;border-color:var(--color-subject-1)}.quick-launch__btn.primary{background:var(--color-subject-1);border-color:var(--color-subject-1);color:#fff}.quick-launch__btn.primary:hover{background:#2563eb}.quick-launch__btn.ghost{background:transparent;border-color:transparent}.quick-launch__btn.ghost:hover{background:#00000008}.reminder-list{display:flex;flex-direction:column;gap:var(--space-2)}.reminder-item{display:flex;gap:var(--space-2);align-items:center}.reminder-item__text{flex:1;padding:var(--space-2) var(--space-3);font-size:var(--text-sm);border:1px solid var(--color-border);border-radius:var(--radius-md);background:#fff}.reminder-item__time{padding:var(--space-2) var(--space-3);font-size:var(--text-sm);border:1px solid var(--color-border);border-radius:var(--radius-md);background:#fff;min-width:120px}.reminder-item__delete{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md);color:var(--color-text-muted);transition:background var(--transition-fast),color var(--transition-fast)}.reminder-item__delete:hover{background:#ef44441a;color:var(--color-subject-2)}.reminder-add{display:flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);font-size:var(--text-sm);color:var(--color-subject-1);border:1px dashed var(--color-subject-1);border-radius:var(--radius-md);transition:background var(--transition-fast)}.reminder-add:hover{background:#3b82f60d}.add-class-btn{position:fixed;bottom:var(--space-6);right:var(--space-6);width:56px;height:56px;border-radius:var(--radius-full);background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center;color:var(--color-subject-1);font-size:1.5rem;transition:transform var(--transition-fast),box-shadow var(--transition-fast);z-index:var(--z-filter)}.add-class-btn:hover{transform:scale(1.05);box-shadow:var(--shadow-hover)}.add-class-btn:focus-visible{outline:none;box-shadow:var(--focus-ring)}@media (max-width: 640px){.add-class-btn{bottom:var(--space-4);right:50%;transform:translate(50%)}}.detail-modal__header{display:flex;flex-direction:column;gap:var(--space-1)}.detail-modal__subject{font-size:var(--text-lg);font-weight:600}.detail-modal__section{margin-bottom:var(--space-4)}.detail-modal__section-title{font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted);margin-bottom:var(--space-2)}.detail-modal__info{display:flex;flex-direction:column;gap:var(--space-1);font-size:var(--text-sm)}.detail-modal__info-row{display:flex;justify-content:space-between}.detail-modal__info-label{color:var(--color-text-muted)}.detail-modal__info-value{font-weight:500}.detail-modal__reminders{display:flex;flex-direction:column;gap:var(--space-1)}.detail-modal__reminder{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);background:var(--color-surface);border-radius:var(--radius-md);font-size:var(--text-sm)}.detail-modal__actions{display:flex;gap:var(--space-2);margin-top:var(--space-4);padding-top:var(--space-4);border-top:1px solid var(--glass-border)}.detail-modal__type-icon{flex-shrink:0;font-size:var(--text-lg);line-height:1;margin-top:2px}.detail-modal__subject{display:flex;align-items:center;gap:var(--space-2);font-size:var(--text-lg);font-weight:600}.detail-modal__meta{display:flex;flex-wrap:wrap;gap:var(--space-2);font-size:var(--text-xs);color:var(--color-text-muted)}