*,:before,:after{box-sizing:border-box}body{margin:0}*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary:#f2f2f7;--bg-secondary:#fff;--text-primary:#1c1c1e;--text-secondary:#8e8e93;--text-tertiary:#c7c7cc;--separator:#e5e5ea;--tint:#007aff;--today-bg:#e8f0fe;--today-text:#007aff;--grid-line:#e5e5ea;--navbar-bg:#ffffffd9;--block-radius:10px;--time-col-width:60px;--row-height:48px;--font-mono:"SF Mono", "Menlo", "Monaco", "Courier New", monospace;--font-sans:-apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif}html,body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;height:100%}#root{height:100%}.app{background:var(--bg-primary);flex-direction:column;max-width:800px;height:100vh;margin:0 auto;display:flex}.notification{text-align:center;flex-shrink:0;padding:10px 16px;font-size:14px;font-weight:500;animation:.3s slideDown}.notification-success{color:#fff;background:#34c759}.notification-error{color:#fff;background:#ff3b30}@keyframes slideDown{0%{opacity:0;transform:translateY(-100%)}to{opacity:1;transform:translateY(0)}}.panel-container{flex:1;padding:20px 16px;overflow-y:auto}.file-upload-panel{max-width:480px;margin:0 auto}.panel-title{color:var(--text-primary);margin-bottom:16px;font-size:20px;font-weight:700}.drop-zone{border:2px dashed var(--text-tertiary);text-align:center;cursor:pointer;background:var(--bg-secondary);border-radius:16px;padding:40px 20px;transition:border-color .2s,background .2s}.drop-zone:hover,.drop-zone-active{border-color:var(--tint);background:#007aff0a}.drop-zone-has-file{border-color:var(--tint);background:#007aff0f;border-style:solid}.file-info{color:var(--text-primary);flex-direction:column;align-items:center;gap:8px;display:flex}.file-name{font-size:15px;font-weight:600}.file-size{color:var(--text-secondary);font-size:13px}.drop-placeholder{color:var(--text-secondary);flex-direction:column;align-items:center;gap:8px;font-size:14px;display:flex}.drop-hint{color:var(--text-tertiary);font-size:12px}.upload-error{color:#ff3b30;background:#fff0f0;border:1px solid #ff3b30;border-radius:8px;margin-top:12px;padding:8px 12px;font-size:13px}.progress-bar-track{background:var(--separator);border-radius:4px;height:8px;margin-top:12px;position:relative;overflow:hidden}.progress-bar-fill{background:var(--tint);border-radius:4px;height:100%;transition:width .3s}.progress-label{color:var(--tint);font-size:11px;font-weight:600;position:absolute;top:-18px;right:0}.upload-actions{justify-content:flex-end;gap:12px;margin-top:16px;display:flex}.preview-panel{max-width:480px;margin:0 auto}.preview-list{flex-direction:column;gap:10px;display:flex}.preview-card{background:var(--bg-secondary);border:.5px solid var(--separator);border-radius:12px;padding:14px 16px;box-shadow:0 1px 3px #0000000f}.preview-card-header{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.preview-course-name{color:var(--text-primary);font-size:16px;font-weight:700}.preview-course-day{color:var(--tint);background:#007aff1a;border-radius:6px;padding:2px 8px;font-size:12px;font-weight:600}.preview-card-meta{flex-direction:column;gap:4px;display:flex}.meta-row{gap:8px;display:flex}.meta-label{color:var(--text-secondary);flex-shrink:0;width:70px;font-size:12px}.meta-value{color:var(--text-primary);font-size:13px}.meta-missing{color:var(--text-tertiary);font-style:italic}.preview-actions{justify-content:flex-end;gap:12px;margin-top:20px;display:flex}.btn{font-size:15px;font-weight:600;font-family:var(--font-sans);cursor:pointer;border:none;border-radius:12px;justify-content:center;align-items:center;padding:10px 20px;transition:background .15s,opacity .15s;display:inline-flex}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--tint);color:#fff;box-shadow:0 2px 8px #007aff4d}.btn-primary:hover:not(:disabled){background:#0070e9}.btn-secondary{background:var(--bg-secondary);color:var(--tint);border:1px solid var(--separator)}.btn-secondary:hover:not(:disabled){background:#007aff0f}.navbar{background:var(--navbar-bg);-webkit-backdrop-filter:blur(20px);border-bottom:.5px solid var(--separator);z-index:100;flex-shrink:0;justify-content:space-between;align-items:center;padding:12px 16px;display:flex;position:sticky;top:0}.navbar-left{flex:1}.navbar-title{color:var(--text-primary);letter-spacing:-.2px;font-size:20px;font-weight:700}.navbar-center{align-items:center;gap:8px;display:flex}.nav-arrow{width:32px;height:32px;color:var(--tint);cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;transition:background .15s;display:flex}.nav-arrow:hover{background:#007aff1a}.nav-week-label{color:var(--text-secondary);text-align:center;min-width:60px;font-size:14px;font-weight:600}.navbar-right{flex:1;justify-content:flex-end;display:flex}.nav-menu-btn{width:32px;height:32px;color:var(--tint);cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;transition:background .15s;display:flex}.nav-menu-btn:hover{background:#007aff1a}.schedule-container{flex-direction:column;flex:1;display:flex;overflow:hidden}.week-header{background:var(--bg-secondary);border-bottom:.5px solid var(--separator);z-index:50;flex-shrink:0;display:flex;position:sticky;top:56px}.time-gutter-spacer{width:var(--time-col-width);border-right:.5px solid var(--separator);flex-shrink:0}.day-header-cell{flex-direction:column;flex:1;justify-content:center;align-items:center;min-width:0;padding:8px 0;display:flex}.day-header-cell.today{background:var(--today-bg)}.day-abbr{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-size:11px;font-weight:500}.day-num{color:var(--text-primary);font-size:18px;font-weight:500;line-height:1.3}.day-num.today-badge{color:#fff;background:var(--tint);border-radius:50%;justify-content:center;align-items:center;width:30px;height:30px;margin-top:1px;font-size:16px;font-weight:600;display:flex}.schedule-grid{background:var(--bg-secondary);flex:1;display:flex;position:relative;overflow:hidden auto}.time-column{width:var(--time-col-width);z-index:10;background:var(--bg-secondary);border-right:.5px solid var(--separator);flex-shrink:0;position:sticky;left:0}.time-slot{height:var(--row-height);border-bottom:.5px solid var(--grid-line);justify-content:flex-end;align-items:flex-start;padding:0 8px 0 0;display:flex}.time-label{font-family:var(--font-mono);color:var(--text-tertiary);margin-top:-6px;font-size:11px;line-height:1}.day-column{border-right:.5px solid var(--separator);flex:1;min-width:0;position:relative}.day-column:last-child{border-right:none}.day-grid-row{height:var(--row-height);border-bottom:.5px solid var(--grid-line)}.course-block{border-radius:var(--block-radius);-webkit-backdrop-filter:blur(8px);cursor:pointer;z-index:5;border:1px solid;transition:transform .1s,box-shadow .15s;position:absolute;left:2px;right:2px;overflow:hidden;box-shadow:0 1px 3px #00000014}.course-block:hover{z-index:20;transform:scale(1.02);box-shadow:0 4px 12px #0000001f}.course-block-inner{flex-direction:column;gap:2px;height:100%;padding:6px 8px;display:flex}.course-header-row{align-items:center;gap:5px;display:flex}.course-dot{border-radius:50%;flex-shrink:0;width:7px;height:7px}.course-name{color:#fff;text-overflow:ellipsis;white-space:nowrap;text-shadow:0 1px 2px #0003;font-size:12px;font-weight:700;line-height:1.2;overflow:hidden}.course-meta{color:#ffffffd9;text-overflow:ellipsis;white-space:nowrap;font-size:10px;font-weight:500;line-height:1.2;overflow:hidden}.course-time{color:#ffffffb3;font-size:9px;font-weight:500;line-height:1.2;font-family:var(--font-mono)}.toolbar{padding:10px 16px;padding-bottom:max(10px, env(safe-area-inset-bottom));background:var(--navbar-bg);-webkit-backdrop-filter:blur(20px);border-top:.5px solid var(--separator);flex-shrink:0;justify-content:space-around;align-items:center;display:flex}.toolbar-btn{color:var(--tint);cursor:pointer;font-size:10px;font-weight:500;font-family:var(--font-sans);background:0 0;border:none;border-radius:10px;flex-direction:column;align-items:center;gap:3px;padding:6px 16px;transition:background .15s;display:flex}.toolbar-btn:hover{background:#007aff14}.toolbar-btn-primary{color:#fff;background:var(--tint);border-radius:12px;padding:8px 20px;font-weight:600;box-shadow:0 2px 8px #007aff4d}.toolbar-btn-primary:hover{background:#0070e9}.schedule-grid::-webkit-scrollbar{width:4px}.schedule-grid::-webkit-scrollbar-track{background:0 0}.schedule-grid::-webkit-scrollbar-thumb{background:var(--text-tertiary);border-radius:2px}@media (width<=1024px){.app{max-width:100%}:root{--time-col-width:52px}.navbar-title{font-size:18px}.day-header-cell{padding:6px 0}.day-num{font-size:16px}.day-num.today-badge{width:26px;height:26px;font-size:14px}.toolbar-btn{padding:5px 12px;font-size:9px}}@media (width<=768px){:root{--time-col-width:44px;--row-height:42px}.navbar-title{font-size:16px}.nav-week-label{font-size:12px}.day-abbr{font-size:10px}.day-num{font-size:14px}.day-num.today-badge{width:24px;height:24px;font-size:13px}.time-label,.course-name{font-size:10px}.course-meta,.course-time{font-size:8px}.course-block-inner{padding:4px 5px}.toolbar{padding:8px 10px}.toolbar-btn{padding:4px 10px;font-size:9px}.toolbar-btn-primary{padding:6px 14px;font-size:9px}.panel-container{padding:16px 12px}.preview-card{padding:10px 12px}.preview-course-name{font-size:14px}}@media (width<=375px){:root{--time-col-width:36px;--row-height:36px}.navbar{padding:8px 10px}.navbar-title{font-size:14px}.nav-week-label{min-width:48px;font-size:11px}.day-abbr{font-size:9px}.day-num{font-size:12px}.day-num.today-badge{width:20px;height:20px;font-size:11px}.time-label{font-size:8px}.schedule-grid{overflow-x:auto}.course-name{font-size:9px}.course-meta,.course-time{font-size:7px}.course-block-inner{gap:1px;padding:2px 4px}.course-block{border-radius:6px;left:1px;right:1px}.toolbar{gap:2px;padding:6px 8px}.toolbar-btn{border-radius:6px;gap:1px;padding:3px 6px;font-size:8px}.toolbar-btn svg{width:14px;height:14px}.toolbar-btn-primary{padding:5px 10px;font-size:8px}.drop-zone{padding:24px 12px}.panel-title{font-size:17px}.preview-card{padding:8px 10px}.preview-course-name{font-size:13px}.btn{padding:8px 14px;font-size:13px}}@media (width<=639px){.schedule-container,.week-header,.schedule-grid,.time-column,.day-column{display:none!important}}.mobile-day-view{flex-direction:column;flex:1;gap:12px;padding:16px 12px;display:flex;overflow-y:auto}.mobile-day-header{justify-content:space-between;align-items:center;padding:0 4px;display:flex}.mobile-day-title{color:var(--text-primary);margin:0;font-size:22px;font-weight:700}.mobile-day-badge{color:var(--tint);background:#007aff1a;border-radius:12px;padding:4px 12px;font-size:13px;font-weight:600}.mobile-empty{text-align:center;color:var(--text-secondary);flex-direction:column;justify-content:center;align-items:center;padding:60px 20px;display:flex}.mobile-empty-icon{margin-bottom:12px;font-size:48px}.mobile-empty p{margin:4px 0;font-size:16px;font-weight:500}.mobile-empty-hint{color:var(--text-tertiary)!important;font-size:13px!important;font-weight:400!important}.mobile-course-list{flex-direction:column;gap:10px;display:flex}.mobile-course-card{background:var(--bg-secondary);border:.5px solid var(--separator);border-radius:14px;transition:transform .1s;display:flex;overflow:hidden;box-shadow:0 1px 4px #00000014}.mobile-course-card:active{transform:scale(.98)}.mobile-course-accent{flex-shrink:0;width:6px}.mobile-course-body{flex-direction:column;flex:1;gap:6px;padding:14px 16px;display:flex}.mobile-course-name{color:var(--text-primary);font-size:16px;font-weight:700;line-height:1.3}.mobile-course-time{color:var(--tint);font-size:13px;font-weight:600;font-family:var(--font-mono)}.mobile-course-meta{flex-wrap:wrap;gap:8px;margin-top:2px;display:flex}.mobile-meta-item{color:var(--text-secondary);font-size:12px}@media (prefers-color-scheme:dark){:root{--bg-primary:#1c1c1e;--bg-secondary:#2c2c2e;--text-primary:#f5f5f7;--text-secondary:#a1a1a6;--text-tertiary:#636366;--separator:#38383a;--navbar-bg:#1c1c1ed9;--today-bg:#007aff26;--grid-line:#38383a}.course-name{text-shadow:0 1px 3px #00000080}.course-block{box-shadow:0 1px 4px #0000004d}.preview-card{box-shadow:0 1px 3px #0003}.panel-title{color:var(--text-primary)}.drop-zone{background:var(--bg-secondary);border-color:var(--text-tertiary)}.upload-error{background:#ff3b301f;border-color:#ff3b3066}.mobile-course-card{box-shadow:0 1px 4px #00000040}}