:root {
  color-scheme: light;
  font-family: Inter, "Segoe UI", sans-serif;
  --bg: #f3f4f6;
  --surface: #ffffff;
  --surface-muted: #f7f8fb;
  --border: #dce2eb;
  --text: #18212f;
  --muted: #64748b;
  --accent: #1f6f5c;
  --accent-soft: #eaf7f2;
  --warning: #d97706;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
button, input { font: inherit; }
.app-shell { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar { background: #0f172a; color: white; padding: 1.5rem; display: flex; flex-direction: column; justify-content: space-between; gap: 1rem; }
.eyebrow, .section-label { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.74rem; color: #7dd3fc; }
.sidebar h1 { font-size: 1.5rem; margin: 0.3rem 0 0.5rem; }
.sidebar-copy { color: #cbd5e1; line-height: 1.5; }
.nav-list { display: grid; gap: 0.45rem; }
.nav-item { background: transparent; color: #e2e8f0; border: 1px solid transparent; border-radius: 12px; padding: 0.8rem 0.9rem; text-align: left; }
.nav-item.active { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.2); }
.sidebar-card { border: 1px solid rgba(255,255,255,0.12); border-radius: 16px; padding: 0.9rem; background: rgba(255,255,255,0.06); }
.sidebar-card p, .sidebar-card small { color: #cbd5e1; margin: 0; }
.content { padding: 1.4rem; display: flex; flex-direction: column; gap: 1rem; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.topbar-actions { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.back-link { display: inline-flex; align-items: center; }
.ghost-btn, .action-btn { border: 1px solid var(--border); background: var(--surface); color: var(--text); padding: 0.7rem 0.95rem; border-radius: 999px; }
.action-btn { background: var(--accent); color: white; border-color: var(--accent); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 1rem; box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04); }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.9rem; }
.stat-card { display: flex; flex-direction: column; gap: 0.4rem; }
.stat-card strong { font-size: 1.5rem; }
.stat-card.accent { background: var(--accent-soft); border-color: #cfe8df; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 0.7rem; margin-bottom: 0.8rem; }
.pill { display: inline-flex; padding: 0.35rem 0.6rem; border-radius: 999px; background: #eff6ff; color: #1d4ed8; font-size: 0.8rem; }
.pill.neutral { background: #f1f5f9; color: #475569; }
.dashboard-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 1rem; }
.list-stack { display: grid; gap: 0.75rem; padding: 0; margin: 0; list-style: none; }
.list-stack li { padding: 0.7rem 0; border-bottom: 1px solid var(--border); }
.table-simple { width: 100%; border-collapse: collapse; }
.table-simple th, .table-simple td { text-align: left; padding: 0.6rem 0; border-bottom: 1px solid var(--border); }
.view { display: none; }
.view.active { display: block; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field-label { color: var(--muted); margin: 0.7rem 0 0.25rem; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; }
.timeline-steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0.7rem; }
.step { border: 1px solid var(--border); border-radius: 14px; padding: 0.75rem; text-align: center; color: var(--muted); background: var(--surface-muted); }
.step.done { background: var(--accent-soft); color: var(--accent); border-color: #cfe8df; }
.step.active { background: #fff7ed; color: var(--warning); border-color: #fde68a; }
.client-card { display: flex; justify-content: space-between; gap: 1rem; padding-top: 0.4rem; }
.quote-table { display: grid; gap: 0.65rem; }
.quote-row { display: flex; justify-content: space-between; padding: 0.7rem 0; border-bottom: 1px solid var(--border); }
.quote-row.total { font-weight: 700; }
.button-row { display: flex; gap: 0.5rem; }
.form-grid { display: grid; gap: 0.6rem; }
.form-grid input, .form-grid select { padding: 0.7rem 0.8rem; border-radius: 12px; border: 1px solid var(--border); background: var(--surface-muted); color: var(--text); }
.form-grid .action-btn { width: fit-content; }
.stat-card span { color: var(--muted); font-size: 0.9rem; }
input[type="search"] { padding: 0.65rem 0.8rem; border-radius: 999px; border: 1px solid var(--border); }
.table-scroll { overflow-x: auto; }
.toast { position: fixed; right: 1rem; bottom: 1rem; background: #0f172a; color: white; padding: 0.75rem 1rem; border-radius: 999px; opacity: 0; transform: translateY(10px); transition: 0.2s ease; pointer-events: none; z-index: 20; }
.toast.show { opacity: 1; transform: translateY(0); }
.empty-state { color: var(--muted); font-style: italic; padding: 0.6rem 0; }
@media (max-width: 920px) { .app-shell { grid-template-columns: 1fr; } .sidebar { gap: 1rem; } .stats-grid, .dashboard-grid, .detail-grid { grid-template-columns: 1fr; } .timeline-steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .content { padding: 1rem; } .topbar, .client-card, .detail-grid, .topbar-actions { grid-template-columns: 1fr; display: grid; } .ghost-btn, .action-btn { width: 100%; justify-content: center; } }