:root{--color-primary:#7c3aed;--color-primary-light:#a78bfa;--color-primary-dark:#5b21b6;--color-primary-bg:#f5f3ff;--color-bg:#f6f5fb;--color-surface:#fff;--color-sidebar:#1c1c2e;--color-sidebar-hover:#ffffff0d;--color-sidebar-text:#8b8fa3;--color-sidebar-active:#fff;--color-text:#1a1a2e;--color-text-secondary:#6b7280;--color-text-tertiary:#9ca3af;--color-border:#e8e6f0;--color-success:#10b981;--color-success-bg:#ecfdf5;--color-success-text:#065f46;--color-warning:#f59e0b;--color-warning-bg:#fffbeb;--color-warning-text:#92400e;--color-danger:#ef4444;--color-danger-bg:#fef2f2;--color-danger-text:#991b1b;--color-info:#6366f1;--color-info-bg:#eef2ff;--color-info-text:#3730a3;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:16px;--shadow-sm:0 1px 3px #0000000a, 0 1px 2px #00000008;--shadow-md:0 4px 12px #0000000d, 0 1px 3px #0000000a;--shadow-lg:0 8px 24px #0000000f, 0 2px 6px #0000000a;--sidebar-width:260px;--topbar-height:60px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:14px}body{background:var(--color-bg);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Inter,Helvetica Neue,Arial,sans-serif;line-height:1.6}#root{min-height:100vh}h1,h2,h3,h4,h5,h6{color:var(--color-text);font-weight:600;line-height:1.35}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-dark)}button{cursor:pointer;font:inherit;color:inherit;background:0 0;border:none}.dashboard-layout{min-height:100vh;display:flex}.dashboard-main{margin-left:var(--sidebar-width);flex-direction:column;flex:1;display:flex}.dashboard-content{flex:1;padding:28px 32px;overflow-y:auto}.sidebar{width:var(--sidebar-width);background:var(--color-sidebar);height:100vh;color:var(--color-sidebar-text);z-index:100;flex-direction:column;display:flex;position:fixed;top:0;left:0}.sidebar-brand{border-bottom:1px solid #ffffff0f;align-items:center;gap:12px;padding:22px 20px;display:flex}.sidebar-logo{font-size:1.4rem}.sidebar-title{color:var(--color-sidebar-active);letter-spacing:-.01em;font-size:1.05rem;font-weight:700}.sidebar-nav{flex-direction:column;flex:1;gap:2px;padding:14px 10px;display:flex}.sidebar-item{border-radius:var(--radius-md);color:var(--color-sidebar-text);text-align:left;align-items:center;gap:12px;width:100%;padding:10px 12px;font-size:.9rem;font-weight:500;transition:all .15s;display:flex}.sidebar-item:hover{background:var(--color-sidebar-hover);color:var(--color-sidebar-active)}.sidebar-item.active{background:var(--color-primary);color:#fff}.sidebar-icon{text-align:center;flex-shrink:0;width:20px;font-size:1.15rem}.topbar{height:var(--topbar-height);background:var(--color-surface);border-bottom:1px solid var(--color-border);flex-shrink:0;justify-content:space-between;align-items:center;padding:0 32px;display:flex}.topbar-greeting{color:var(--color-text);letter-spacing:-.01em;font-size:1rem;font-weight:600}.topbar-date{color:var(--color-text-secondary);font-size:.85rem}.dashboard-header{margin-bottom:24px}.dashboard-header h1{letter-spacing:-.02em;font-size:1.5rem;font-weight:700}.dashboard-subtitle{color:var(--color-text-secondary);margin-top:4px;font-size:.9rem}.section-title{letter-spacing:-.01em;font-size:1.15rem;font-weight:700}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:20px;transition:box-shadow .15s}.card:hover{box-shadow:var(--shadow-md)}.card-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.card-title{text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-tertiary);font-size:.78rem;font-weight:600}.stat-cards-grid{grid-template-columns:repeat(4,1fr);gap:16px;display:grid}.stat-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:18px 20px;transition:box-shadow .15s}.stat-card:hover{box-shadow:var(--shadow-md)}.stat-card-value{letter-spacing:-.02em;font-size:1.75rem;font-weight:700;line-height:1.2}.stat-card-label{color:var(--color-text-secondary);margin-top:6px;font-size:.82rem;font-weight:500}.stat-card-change{border-radius:9999px;margin-top:8px;padding:2px 8px;font-size:.78rem;font-weight:600;display:inline-block}.stat-card-change.positive{background:var(--color-success-bg);color:var(--color-success-text)}.stat-card-change.neutral{background:var(--color-bg);color:var(--color-text-tertiary)}.badge{letter-spacing:.01em;border-radius:9999px;align-items:center;padding:3px 10px;font-size:.72rem;font-weight:600;display:inline-flex}.badge-success{background:var(--color-success-bg);color:var(--color-success-text)}.badge-warning{background:var(--color-warning-bg);color:var(--color-warning-text)}.badge-danger{background:var(--color-danger-bg);color:var(--color-danger-text)}.badge-info{background:var(--color-info-bg);color:var(--color-info-text)}.progress-bar{background:#e8e6f0;border-radius:9999px;height:6px;overflow:hidden}.progress-bar-fill{border-radius:9999px;height:100%;transition:width .3s}.quick-actions-list{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.quick-action-btn{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);text-align:center;color:var(--color-text-secondary);padding:12px 16px;font-size:.85rem;font-weight:600;transition:all .15s}.quick-action-btn:hover{border-color:var(--color-primary-light);background:var(--color-primary-bg);color:var(--color-primary)}.dashboard-body{align-items:flex-start;gap:24px;display:flex}.dashboard-main-column{flex-direction:column;flex:1;gap:20px;min-width:0;display:flex}.dashboard-side-column{flex-direction:column;flex-shrink:0;gap:20px;width:360px;display:flex}@media (width<=1200px){.dashboard-side-column{width:320px}}@media (width<=900px){.dashboard-body{flex-direction:column}.dashboard-side-column{width:100%}.stat-cards-grid{grid-template-columns:repeat(2,1fr)}.quick-actions-list{grid-template-columns:1fr}}@media (width<=600px){.stat-cards-grid{grid-template-columns:1fr}}.record-page{padding:24px 32px}.record-page-title{color:var(--color-text-primary);margin-bottom:8px;font-size:22px;font-weight:600}.record-page-desc{color:var(--color-text-secondary);margin-bottom:24px;font-size:14px}.record-page-placeholder{color:var(--color-text-muted);font-size:14px;font-style:italic}.record-header{justify-content:space-between;align-items:flex-start;margin-bottom:24px;display:flex}.record-add-btn{background:var(--color-primary);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:6px;padding:8px 16px;font-size:14px}.record-add-btn:hover{opacity:.85}.record-form{background:var(--color-card-bg);border:1px solid var(--color-border);border-radius:8px;margin-bottom:24px;padding:20px}.record-form-row{flex-wrap:wrap;gap:16px;margin-bottom:16px;display:flex}.record-form-group{flex-direction:column;flex:1;gap:4px;min-width:160px;display:flex}.record-form-label{color:var(--color-text-secondary);font-size:13px;font-weight:500}.record-form-input,.record-form-textarea{border:1px solid var(--color-border);color:var(--color-text-primary);background:var(--color-bg);border-radius:6px;outline:none;padding:8px 12px;font-size:14px;transition:border-color .2s}.record-form-input:focus,.record-form-textarea:focus{border-color:var(--color-primary)}.record-form-textarea{resize:vertical;min-height:60px}.record-submit-btn{background:var(--color-primary);color:#fff;cursor:pointer;border:none;border-radius:6px;margin-top:8px;padding:10px 20px;font-size:14px;font-weight:500}.record-submit-btn:hover{opacity:.85}.record-list{flex-direction:column;gap:12px;display:flex}.record-card{background:var(--color-card-bg);border:1px solid var(--color-border);border-radius:8px;padding:16px;position:relative}.record-card-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.record-card-subject{color:var(--color-text-primary);font-size:16px;font-weight:600}.record-card-duration{color:var(--color-primary);font-size:14px;font-weight:500}.record-card-meta{color:var(--color-text-secondary);flex-wrap:wrap;gap:16px;margin-bottom:8px;font-size:13px;display:flex}.record-card-tags{flex-wrap:wrap;gap:6px;margin-bottom:8px;display:flex}.record-tag{background:var(--color-primary-light);color:var(--color-primary);border-radius:4px;padding:2px 8px;font-size:12px;display:inline-block}.record-card-notes{color:var(--color-text-secondary);margin-bottom:8px;font-size:14px;line-height:1.5}.record-delete-btn{color:var(--color-danger);border:1px solid var(--color-danger);cursor:pointer;background:0 0;border-radius:4px;padding:4px 12px;font-size:12px}.record-delete-btn:hover{background:var(--color-danger);color:#fff}.record-form-hint{color:var(--color-text-muted);font-size:12px;font-weight:400}.record-review-section{margin-bottom:10px}.record-review-label{color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px;font-size:12px;font-weight:600;display:block}.record-review-list{color:var(--color-text-primary);margin:0;padding-left:20px;font-size:14px;line-height:1.6}.record-review-summary{color:var(--color-text-primary);margin:0;font-size:14px;line-height:1.5}.record-card-badges{flex-wrap:wrap;gap:6px;display:flex}.record-badge{text-transform:uppercase;letter-spacing:.3px;border-radius:4px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.record-badge-danger{color:#c53030;background:#fde8e8}.record-badge-warning{color:#b45309;background:#fef3c7}.record-badge-info{color:#0369a1;background:#e0f2fe}.record-badge-category{color:#6b46c1;background:#e9d8fd}.record-badge-solved{color:#065f46;background:#d1fae5}.record-badge-unsolved{color:#6b7280;background:#f3f4f6}.record-form-checkbox-group{min-width:120px}.record-form-checkbox{color:var(--color-text-primary);cursor:pointer;align-items:center;gap:6px;padding:8px 0;font-size:14px;display:flex}.record-form-checkbox input[type=checkbox]{cursor:pointer;width:16px;height:16px}.record-project-desc{color:var(--color-text-secondary);margin:0 0 16px;font-size:14px;line-height:1.5}.record-project-progress{margin-bottom:12px}.record-project-progress-header{justify-content:space-between;margin-bottom:6px;display:flex}.record-project-progress-label{color:var(--color-text-secondary);font-size:13px;font-weight:500}.record-project-progress-value{color:var(--color-primary);font-size:13px;font-weight:600}.record-project-progress-bar{background:var(--color-border);border-radius:4px;width:100%;height:8px;overflow:hidden}.record-project-progress-fill{background:var(--color-primary);border-radius:4px;height:100%;transition:width .3s}