/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: #1a73e8;
  --primary-dark: #1558b0;
  --primary-light: #e8f0fe;
  --success: #34a853;
  --warning: #f9ab00;
  --danger: #ea4335;
  --text: #202124;
  --text-muted: #5f6368;
  --border: #dadce0;
  --bg: #f8f9fa;
  --card-bg: #fff;
  --radius: 8px;
  --shadow: 0 1px 4px rgba(0,0,0,.12);
  --shadow-md: 0 2px 12px rgba(0,0,0,.15);
}
html { font-size: 14px; }
body { font-family: 'Google Sans','Noto Sans TC',Arial,sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: 14px; }
.hidden { display: none !important; }

/* ── Navbar ─────────────────────────────────────────────────── */
.navbar { position: sticky; top: 0; z-index: 100; display: flex; align-items: center; justify-content: space-between; padding: 0 24px; height: 56px; background: var(--primary); color: #fff; box-shadow: var(--shadow-md); }
.navbar-brand { display: flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 600; cursor: pointer; }
.navbar-links { display: flex; gap: 8px; }
.navbar-links a { color: rgba(255,255,255,.85); padding: 6px 14px; border-radius: 20px; font-size: 13px; transition: background .2s; }
.navbar-links a:hover, .navbar-links a.active { background: rgba(255,255,255,.2); color: #fff; text-decoration: none; }

/* ── Loading ─────────────────────────────────────────────────── */
.loading-overlay { position: fixed; inset: 0; background: rgba(255,255,255,.65); display: flex; align-items: center; justify-content: center; z-index: 9000; }
.spinner { width: 40px; height: 40px; border: 4px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ───────────────────────────────────────────────────── */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); padding: 12px 24px; border-radius: 24px; font-size: 13px; font-weight: 500; z-index: 9999; box-shadow: var(--shadow-md); transition: opacity .3s; }
.toast-success { background: var(--success); color: #fff; }
.toast-error   { background: var(--danger);  color: #fff; }
.toast-info    { background: var(--primary); color: #fff; }

/* ── Page ────────────────────────────────────────────────────── */
.page { padding: 24px; max-width: 1400px; margin: 0 auto; }

/* ── Card ────────────────────────────────────────────────────── */
.card { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 20px; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.card-title { font-size: 15px; font-weight: 600; color: var(--text); }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 6px; border: none; font-size: 13px; font-weight: 500; transition: all .2s; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #c62828; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-icon { padding: 6px; border-radius: 50%; background: transparent; border: none; color: var(--text-muted); }
.btn-icon:hover { background: var(--bg); color: var(--text); }

/* ── Form ────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .5px; }
.form-control { width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; color: var(--text); transition: border-color .2s; background: #fff; }
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,115,232,.15); }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* ── Modal ───────────────────────────────────────────────────── */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex; align-items: center; justify-content: center; z-index: 5000; padding: 16px; }
.modal { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-md); width: 100%; max-width: 600px; max-height: 90vh; overflow-y: auto; animation: fadeUp .2s ease; }
.modal-lg { max-width: 900px; }
@keyframes fadeUp { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: #fff; z-index: 1; }
.modal-title { font-size: 16px; font-weight: 600; }
.modal-close { font-size: 20px; background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 4px 8px; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 20px; }
.modal-footer { display: flex; gap: 10px; justify-content: flex-end; padding: 14px 20px; border-top: 1px solid var(--border); position: sticky; bottom: 0; background: #fff; }

/* ── Table ───────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th { background: var(--primary); color: #fff; padding: 10px 12px; text-align: left; font-weight: 500; white-space: nowrap; }
#items-container .data-table th { position: sticky; top: 0; z-index: 2; background: #f8f9fa; color: var(--text); box-shadow: 0 1px 0 var(--border); }
.data-table td { padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.data-table tbody tr:hover { background: var(--primary-light); }
.data-table .actions { display: flex; gap: 6px; }

/* ── Badge / Status ──────────────────────────────────────────── */
.badge { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; text-transform: uppercase; }
.badge-completed   { background: #e6f4ea; color: var(--success); }
.badge-overdue     { background: #fce8e6; color: var(--danger); }
.badge-pending     { background: #fef7e0; color: var(--warning); }
.badge-in_progress { background: #e8f0fe; color: #1a73e8; }
.badge-active      { background: var(--primary-light); color: var(--primary); }

/* ── KPI Cards ───────────────────────────────────────────────── */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 24px; }
.kpi-card { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; text-align: center; }
.kpi-value { font-size: 36px; font-weight: 700; line-height: 1.1; }
.kpi-label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.kpi-card.c-total     .kpi-value { color: var(--primary); }
.kpi-card.c-completed .kpi-value { color: var(--success); }
.kpi-card.c-pending   .kpi-value { color: var(--warning); }
.kpi-card.c-overdue   .kpi-value { color: var(--danger); }
.kpi-card.c-rate      .kpi-value { color: var(--primary-dark); }

/* ── Chart containers ────────────────────────────────────────── */
.charts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
@media (max-width: 768px) { .charts-grid { grid-template-columns: 1fr; } }
.chart-box { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; }
.chart-title { font-size: 14px; font-weight: 600; margin-bottom: 10px; color: var(--text-muted); }
.chart-area { min-height: 260px; }
.chart-full { grid-column: 1 / -1; }

/* ── Gantt ───────────────────────────────────────────────────── */
.gantt-wrap { overflow-x: auto; }
.gantt-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.gantt-table th, .gantt-table td { border: 1px solid var(--border); padding: 4px 8px; white-space: nowrap; }
.gantt-table th { background: var(--bg); font-weight: 600; }
.gantt-bar-cell { position: relative; min-width: 400px; }
.gantt-bar { height: 18px; border-radius: 3px; position: absolute; top: 50%; transform: translateY(-50%); min-width: 4px; }
.gantt-completed { background: var(--success); }
.gantt-overdue   { background: var(--danger); }
.gantt-pending   { background: var(--warning); }

/* ── Year select ─────────────────────────────────────────────── */
.year-select-wrap { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.year-select-wrap select.form-control { max-width: 220px; }

/* ── Tab ─────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--border); margin-bottom: 24px; }
.tab-btn { padding: 10px 20px; border: none; background: none; cursor: pointer; font-size: 13px; font-weight: 500; color: var(--text-muted); border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all .2s; }
.tab-btn:hover { color: var(--primary); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-panel.hidden { display: none; }

/* ── Section header ──────────────────────────────────────────── */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.section-title { font-size: 15px; font-weight: 600; }

/* ── File list ───────────────────────────────────────────────── */
.file-list { list-style: none; margin-top: 8px; }
.file-list li { display: flex; align-items: center; gap: 8px; padding: 5px 0; font-size: 13px; }
.file-list a { color: var(--primary); }

/* ── Category items ──────────────────────────────────────────── */
.category-group { margin-bottom: 24px; }
.category-label { font-weight: 700; color: var(--primary-dark); padding: 6px 12px; background: var(--primary-light); border-radius: 4px; margin-bottom: 8px; font-size: 13px; }

/* ── Plan header summary ─────────────────────────────────────── */
.plan-summary { background: linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%); color: #fff; border-radius: var(--radius); padding: 24px 28px; margin-bottom: 24px; }
.plan-summary h2 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.plan-summary .meta { font-size: 13px; opacity: .85; display: flex; gap: 20px; flex-wrap: wrap; }

/* ── Progress bar ────────────────────────────────────────────── */
.progress { height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--primary); border-radius: 4px; transition: width .4s; }

/* ── Toggle Switch ───────────────────────────────────────────── */
.toggle-switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-slider { position: absolute; cursor: pointer; inset: 0; background: var(--border); border-radius: 24px; transition: background .2s; }
.toggle-slider:before { content: ''; position: absolute; height: 18px; width: 18px; left: 3px; bottom: 3px; background: #fff; border-radius: 50%; transition: transform .2s; box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.toggle-switch input:checked + .toggle-slider { background: var(--primary); }
.toggle-switch input:checked + .toggle-slider:before { transform: translateX(20px); }
.toggle-switch input:focus-visible + .toggle-slider { outline: 2px solid var(--primary); outline-offset: 2px; }
.toggle-row { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 6px; }
.toggle-label { font-size: 13px; font-weight: 500; color: var(--text); }
.toggle-desc  { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ── Trigger status dots ──────────────────────────────────────── */
.trigger-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.trigger-dot.on  { background: var(--success); }
.trigger-dot.off { background: var(--danger); }
.trigger-row { display: flex; align-items: center; gap: 8px; font-size: 13px; }

/* ── Dashboard 月報專用樣式 ────────────────────────────── */
.dash-view-tabs { display:flex; gap:0; margin-bottom:24px; border-bottom:2px solid var(--border); }
.dash-tab-btn { padding:10px 24px; border:none; background:none; cursor:pointer; font-size:13px; font-weight:500; color:var(--text-muted); border-bottom:2px solid transparent; margin-bottom:-2px; transition:all .2s; }
.dash-tab-btn.active { color:var(--primary); border-bottom-color:var(--primary); }
.month-controls { display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:24px; padding:16px 20px; background:var(--card-bg); border-radius:var(--radius); box-shadow:var(--shadow); }
.month-controls select.form-control { max-width:120px; }
.month-controls .month-label { font-size:18px; font-weight:700; color:var(--primary); margin-left:4px; }
.focus-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:16px; margin-bottom:20px; }
.focus-card { background:var(--card-bg); border-radius:var(--radius); box-shadow:var(--shadow); padding:20px; border-left:4px solid var(--border); }
.focus-card.f-done  { border-color:var(--success); }
.focus-card.f-over  { border-color:var(--danger); }
.focus-card.f-next  { border-color:var(--warning); }
.focus-card.f-due   { border-color:var(--primary); }
.focus-card .f-val  { font-size:32px; font-weight:700; line-height:1; }
.focus-card .f-lbl  { font-size:12px; color:var(--text-muted); margin-top:5px; }
.focus-card.f-done .f-val { color:var(--success); }
.focus-card.f-over .f-val { color:var(--danger); }
.focus-card.f-next .f-val { color:var(--warning); }
.focus-card.f-due  .f-val { color:var(--primary); }
.focus-card .f-sub { font-size:11px; color:var(--text-muted); margin-top:4px; }

.cat-matrix { display:flex; flex-direction:column; gap:10px; }
.cat-row { display:flex; align-items:center; gap:12px; }
.cat-name { flex:0 0 220px; font-size:12px; color:var(--text); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.cat-bar-track { flex:1; background:var(--border); border-radius:6px; height:18px; position:relative; overflow:hidden; }
.cat-bar-fill { height:100%; border-radius:6px; position:absolute; top:0; left:0; transition:width .5s ease; }
.cat-bar-fill.s-good { background:var(--success); }
.cat-bar-fill.s-warn { background:var(--warning); }
.cat-bar-fill.s-bad  { background:var(--danger); }
.cat-stat { flex:0 0 110px; font-size:11px; color:var(--text-muted); text-align:right; white-space:nowrap; }
.cat-badges { flex:0 0 80px; display:flex; gap:4px; justify-content:flex-end; }
.overdue-table td:first-child { color:var(--danger); font-weight:700; }
.overdue-row-critical td { background:#fff0f0 !important; }
.overdue-row-warn td { background:#fff8f8 !important; }
.rate-comparison { display:flex; align-items:center; gap:16px; padding:12px 16px; background:var(--card-bg); border-radius:var(--radius); box-shadow:var(--shadow); margin-bottom:20px; font-size:13px; }
.rate-delta.up { color:var(--success); font-weight:700; }
.rate-delta.dn { color:var(--danger); font-weight:700; }
.rate-arrow { font-size:18px; color:var(--text-muted); }
@media (max-width:768px) { .cat-name { flex:0 0 120px; } .cat-stat { flex:0 0 80px; } }

@media (max-width: 768px) {
  .page { padding: 12px; }
  .navbar { padding: 0 12px; }
  .navbar-brand { font-size: 14px; }
}
@media print {
  .navbar, .btn, .actions, #loading-overlay, #toast { display: none !important; }
  .page { padding: 0; max-width: 100%; }
  .card { box-shadow: none; border: 1px solid #ddd; }
}