/* ── 甘特图/时间线 · 样式 ── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  font-size:14px;line-height:1.6;color:var(--text-primary);
  background-color:var(--bg-body);
  background-image:var(--bg-pattern,radial-gradient(circle,var(--border) 1px,transparent 1px));
  background-size:var(--bg-pattern-size,18px 18px);min-height:100vh;padding:20px;
}
body[data-theme="3"]{background-image:linear-gradient(135deg,#e8f0fe,#f3e8ff,#fce7f3,#e0f2fe)}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.app-layout{display:flex;min-height:100vh}
.sidebar{width:260px;min-width:260px;position:fixed;top:0;left:0;bottom:0;background:var(--bg-panel);border-right:1px solid var(--border);padding:20px 14px;display:flex;flex-direction:column;z-index:100;overflow-y:auto}
.sidebar-brand{font-family:Georgia,'Times New Roman',serif;font-size:1rem;font-weight:bold;color:var(--text-primary);text-decoration:none;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.sidebar-nav{list-style:none;flex:1}
.sidebar-nav li{margin-bottom:2px}
.sidebar-nav a{display:flex;align-items:center;gap:8px;padding:6px 10px;border-radius:2px;color:var(--text-secondary);text-decoration:none;font-size:.8rem;transition:all .15s}
.sidebar-nav a:hover{background:var(--button-bg);color:var(--text-primary)}
.sidebar-nav a.active{background:var(--button-bg);color:var(--accent);font-weight:600}
.sidebar-divider{height:1px;background:var(--border);margin:16px 0}
.main-content{margin-left:260px;flex:1;padding:20px 24px;display:flex;flex-direction:column}
.navbar{background:var(--bg-panel);border:1px solid var(--border);padding:10px 20px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;border-radius:2px;margin-bottom:12px}
.navbar-brand{font-family:Georgia,'Times New Roman',serif;font-size:1.05rem;font-weight:bold;color:var(--text-primary);text-decoration:none;white-space:nowrap}
.navbar-links{display:flex;flex-wrap:wrap;gap:2px;list-style:none}
.navbar-links a{display:inline-block;padding:6px 12px;border-radius:2px;color:var(--text-secondary);text-decoration:none;font-size:.82rem;font-weight:500}
.navbar-links a:hover{background:var(--button-bg);color:var(--text-primary)}
.navbar-links a.active{color:var(--accent);background:var(--button-bg)}
.navbar-controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.panel{background:var(--bg-panel);border:1px solid var(--border);border-radius:2px;padding:16px;margin-bottom:0}
.panel-header{font-family:Georgia,'Times New Roman',serif;font-size:.85rem;font-weight:bold;color:var(--text-primary);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.btn{background:var(--button-bg);color:var(--text-primary);border:1px solid var(--border);border-radius:2px;padding:6px 14px;font-size:.82rem;font-family:inherit;cursor:pointer;display:inline-flex;align-items:center;gap:5px;white-space:nowrap;box-shadow:inset 0 -2px 0 rgba(0,0,0,0.06);text-decoration:none}
.btn:hover{background:var(--button-hover)}.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff;border:1px solid var(--accent)}.btn-primary:hover{background:var(--accent-hover)}
.btn-sm{padding:4px 10px;font-size:.76rem}
.btn-group{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.btn-success{background:var(--success);color:#fff;border:1px solid var(--success)}
.btn-danger{background:var(--error);color:#fff;border:1px solid var(--error)}
input[type="text"],input[type="date"],input[type="number"],select,textarea{background:var(--bg-body);color:var(--text-primary);border:1px solid var(--border);border-radius:2px;padding:8px 10px;font-size:.84rem;width:100%;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}
textarea{resize:vertical;min-height:60px}
.mb-1{margin-bottom:8px}.mb-2{margin-bottom:12px}
.label-help{font-size:.76rem;color:var(--text-secondary);display:block;margin-bottom:4px}
.text-xs{font-size:.74rem}.text-sm{font-size:.78rem}
.theme-toggle{background:var(--button-bg);border:1px solid var(--border);color:var(--text-primary);border-radius:2px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem}
.theme-toggle:hover{background:var(--button-hover)}
.status-bar{display:flex;align-items:center;gap:8px;padding:8px 14px;margin-top:10px;background:var(--bg-panel);border:1px solid var(--border);border-radius:2px;font-size:.76rem;color:var(--text-secondary)}

/* ── Gantt specific ── */
.gantt-container{overflow-x:auto;overflow-y:auto;position:relative;border:1px solid var(--border);border-radius:2px;background:var(--bg-panel);flex:1}
.gantt-canvas-wrap{position:relative;min-width:800px}
.gantt-header{display:flex;border-bottom:2px solid var(--border);position:sticky;top:0;background:var(--bg-panel);z-index:10}
.gantt-header .task-label-col{width:200px;min-width:200px;padding:8px 12px;font-weight:bold;font-size:.78rem;border-right:2px solid var(--border)}
.gantt-header .timeline-col{flex:1;position:relative;overflow:hidden}
.gantt-header .day-cell{position:absolute;top:0;font-size:.65rem;text-align:center;color:var(--text-secondary);padding-top:4px;border-left:1px solid var(--border);pointer-events:none}
.gantt-row{display:flex;border-bottom:1px solid var(--border);min-height:42px;align-items:stretch}
.gantt-row:hover{background:var(--button-bg)}
.gantt-row .task-label-col{width:200px;min-width:200px;padding:6px 12px;border-right:2px solid var(--border);display:flex;align-items:center;gap:6px;font-size:.78rem}
.gantt-row .task-label-col .task-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gantt-row .timeline-col{flex:1;position:relative;min-height:40px}
.gantt-bar{position:absolute;top:8px;height:24px;border-radius:4px;cursor:grab;display:flex;align-items:center;padding:0 8px;font-size:.68rem;color:#fff;overflow:hidden;white-space:nowrap;min-width:20px;transition:box-shadow .15s}
.gantt-bar:hover{box-shadow:0 2px 8px rgba(0,0,0,0.25);z-index:5}
.gantt-bar .progress-fill{position:absolute;left:0;top:0;bottom:0;background:rgba(255,255,255,0.25);border-radius:4px 0 0 4px}
.gantt-bar .resize-handle{position:absolute;right:0;top:0;bottom:0;width:6px;cursor:ew-resize;background:rgba(0,0,0,0.1);border-radius:0 4px 4px 0}
.gantt-today-line{position:absolute;top:0;bottom:0;width:2px;background:var(--error);z-index:4;pointer-events:none}
.gantt-weekend{position:absolute;top:0;bottom:0;background:var(--button-bg);z-index:0;pointer-events:none}
.task-form-grid{display:grid;grid-template-columns:1fr 1fr 1fr 100px 60px;gap:8px;margin-bottom:8px;align-items:end}
.task-form-grid input{font-size:.78rem;padding:6px 8px}

/* Color categories (fallback for legacy, dynamic .gantt-cs-* injected by JS) */
.gantt-color-0{background:#4a6fa5}.gantt-color-1{background:#e74c3c}
.gantt-color-2{background:#27ae60}.gantt-color-3{background:#f39c12}
.gantt-color-4{background:#8e44ad}.gantt-color-5{background:#1abc9c}

/* Bar style variants */
.gantt-bar-flat{border-radius:0 !important}
.gantt-bar-flat .progress-fill{border-radius:0}
.gantt-bar-flat .resize-handle{border-radius:0}

.gantt-bar-gradient{border:none !important;box-shadow:0 2px 4px rgba(0,0,0,0.15)}
.gantt-bar-gradient .progress-fill{background:rgba(255,255,255,0.3) !important;border-radius:inherit}

@media(max-width:768px){
  body{padding:10px}.sidebar{width:240px;min-width:240px}.main-content{margin-left:240px;padding:12px}
  .task-form-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .sidebar{position:relative;width:100%;min-width:100%;max-height:130px;flex-direction:row;flex-wrap:wrap;align-items:center;gap:6px;padding:8px 12px;border-right:none;border-bottom:1px solid var(--border)}
  .sidebar-nav{display:flex;flex-wrap:wrap;gap:2px;flex:none}.sidebar-nav a{padding:3px 6px;font-size:.7rem}
  .sidebar-divider{display:none}.main-content{margin-left:0;padding:8px}
}