/* Sparki — design tokens (both themes), layout primitives, components. Clean professional: white + deep blue. */
:root {
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-5: 24px; --space-6: 32px; --space-7: 48px; --space-8: 72px;
  --fs-xs: .78rem; --fs-sm: .875rem; --fs-md: 1rem; --fs-lg: 1.125rem; --fs-xl: 1.375rem; --fs-2xl: 1.75rem; --fs-3xl: 2.25rem; --fs-hero: clamp(2.4rem, 5vw, 3.6rem);
  --radius: 10px; --radius-lg: 16px; --shadow: 0 1px 2px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.06);
  --bg: #ffffff; --surface: #f5f7fb; --surface-2: #eef2f8; --text: #0f172a; --muted: #475569; --border: #d9e0ea;
  --accent: #1d4ed8; --accent-strong: #1e40af; --accent-soft: #e3ecfd; --accent-text: #1d4ed8; --on-accent: #ffffff;
  --ok-bg: #dcfce7; --ok-text: #14532d; --info-bg: #dbeafe; --info-text: #1e3a8a; --warn-bg: #fef3c7; --warn-text: #713f12; --danger-bg: #fee2e2; --danger-text: #7f1d1d; --neutral-bg: #e2e8f0; --neutral-text: #1e293b;
  --danger: #b91c1c; --ok: #15803d; --warn: #b45309;
  --nav-bg: rgba(255,255,255,.92); --sidebar-bg: #0f1c3f; --sidebar-text: #dbe4f5; --sidebar-active: #1d4ed8; --sidebar-muted: #9fb0d0;
  --heat-0: rgba(37,99,235,.45); --heat-1: rgba(220,38,38,.55);
  color-scheme: light;
}
[data-theme="dark"] {
  --bg: #0b1220; --surface: #121b2e; --surface-2: #1a2540; --text: #e7edf7; --muted: #a9b7cc; --border: #263352;
  --accent: #2563eb; --accent-strong: #1d4ed8; --accent-soft: #172554; --accent-text: #8fb4ff; --on-accent: #ffffff;
  --ok-bg: #14532d; --ok-text: #bbf7d0; --info-bg: #1e3a8a; --info-text: #dbeafe; --warn-bg: #713f12; --warn-text: #fde68a; --danger-bg: #7f1d1d; --danger-text: #fecaca; --neutral-bg: #263352; --neutral-text: #e2e8f0;
  --danger: #fca5a5; --ok: #86efac; --warn: #fcd34d;
  --nav-bg: rgba(11,18,32,.9); --sidebar-bg: #0a1330; --sidebar-text: #dbe4f5; --sidebar-active: #2563eb; --sidebar-muted: #9fb0d0;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; font-size: var(--fs-md); line-height: 1.5; color: var(--text); background: var(--bg); }
img { max-width: 100%; display: block; }
a { color: var(--accent-text); }
h1, h2, h3, h4 { margin: 0 0 var(--space-3); line-height: 1.15; letter-spacing: -.01em; }
h1 { font-size: var(--fs-3xl); } h2 { font-size: var(--fs-2xl); } h3 { font-size: var(--fs-xl); } h4 { font-size: var(--fs-lg); }
p { margin: 0 0 var(--space-3); }
.muted { color: var(--muted); } .small { font-size: var(--fs-sm); } .xs { font-size: var(--fs-xs); }
.price, .num { white-space: nowrap; font-variant-numeric: tabular-nums; }
.price { font-weight: 700; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.container { width: min(1180px, 100% - 2 * var(--space-4)); margin-inline: auto; }
.icon { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; vertical-align: middle; }
.icon.lg { width: 28px; height: 28px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); min-height: 44px; padding: 0 var(--space-4); border-radius: var(--radius); border: 1px solid transparent; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; transition: background .15s, border-color .15s, transform .05s; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-strong); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--surface-2); }
.btn-ghost { background: transparent; color: var(--accent-text); }
.btn-ghost:hover { background: var(--accent-soft); }
.btn-danger { background: var(--danger-bg); color: var(--danger-text); border-color: transparent; }
.btn-hero { background: #ffffff; color: #1e3a8a; }
.btn-hero:hover { background: #e3ecfd; }
.btn-hero-outline { background: #0f1c3f; color: #ffffff; border-color: #c7d7ff; }
.btn-hero-outline:hover { background: #1e3a8a; }
.btn[disabled], .btn[aria-busy="true"] { opacity: .6; cursor: progress; }
.btn-sm { min-height: 36px; padding: 0 var(--space-3); font-size: var(--fs-sm); }
.btn-icon { width: 44px; padding: 0; }

/* Forms */
.field { display: flex; flex-direction: column; gap: var(--space-1); margin-bottom: var(--space-4); }
.field label, .field .label { font-weight: 600; font-size: var(--fs-sm); }
.input, select, textarea, input[type="text"], input[type="email"], input[type="tel"], input[type="number"], input[type="date"], input[type="time"], input[type="datetime-local"], input[type="search"] {
  width: 100%; min-height: 44px; padding: 10px 12px; font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); }
textarea { min-height: 96px; resize: vertical; }
.field .error { color: var(--danger); font-size: var(--fs-sm); min-height: 1.2em; }
.field .hint { color: var(--muted); font-size: var(--fs-xs); }
.field.invalid .input, .field.invalid select, .field.invalid textarea, .field.invalid input { border-color: var(--danger); }
.error-summary { background: var(--danger-bg); color: var(--danger-text); border-radius: var(--radius); padding: var(--space-3) var(--space-4); margin-bottom: var(--space-4); }
.check { display: flex; align-items: center; gap: var(--space-3); min-height: 44px; cursor: pointer; }
.check input { width: 22px; height: 22px; accent-color: var(--accent); }
.form-grid { display: grid; gap: 0 var(--space-4); grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* Cards, badges, tables */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); }
.card.tight { padding: var(--space-4); }
.card-grid { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); align-items: stretch; }
.card-grid > .card { display: flex; flex-direction: column; height: 100%; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; font-size: var(--fs-xs); font-weight: 700; white-space: nowrap; background: var(--neutral-bg); color: var(--neutral-text); }
.badge-ok { background: var(--ok-bg); color: var(--ok-text); } .badge-info { background: var(--info-bg); color: var(--info-text); }
.badge-warn { background: var(--warn-bg); color: var(--warn-text); } .badge-danger { background: var(--danger-bg); color: var(--danger-text); }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
thead th { position: sticky; top: 0; background: var(--surface-2); font-weight: 700; white-space: nowrap; z-index: 1; }
th button.sort { all: unset; cursor: pointer; font-weight: 700; display: inline-flex; gap: 4px; align-items: center; min-height: 32px; }
tbody tr:hover { background: var(--surface-2); }
tr.clickable { cursor: pointer; }
.table-tools { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; justify-content: space-between; padding: var(--space-3); border-bottom: 1px solid var(--border); }
.table-tools input[type="search"] { max-width: 320px; }
.pager { display: flex; gap: var(--space-2); align-items: center; padding: var(--space-3); justify-content: flex-end; }
.kpi-row { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); margin-bottom: var(--space-5); }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-4); }
.kpi .value { font-size: var(--fs-2xl); font-weight: 800; letter-spacing: -.02em; }
.kpi .label { color: var(--muted); font-size: var(--fs-sm); }
.stack { display: flex; flex-direction: column; gap: var(--space-3); }
.row { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
.between { justify-content: space-between; }
.section-head { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: flex-end; justify-content: space-between; margin: var(--space-6) 0 var(--space-4); }
.section-head h2, .section-head h3 { margin: 0; }
.divider { border: 0; border-top: 1px solid var(--border); margin: var(--space-5) 0; }
.list { list-style: none; margin: 0; padding: 0; } .list li { padding: var(--space-3) 0; border-bottom: 1px solid var(--border); }
.list li:last-child { border-bottom: 0; }
.timeline { list-style: none; margin: 0; padding: 0 0 0 var(--space-4); border-left: 2px solid var(--border); }
.timeline li { position: relative; padding: 0 0 var(--space-4) var(--space-4); }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }

/* States */
.skeleton { display: grid; gap: var(--space-3); }
.skeleton .bar { height: 16px; border-radius: 6px; background: linear-gradient(90deg, var(--surface-2), var(--surface), var(--surface-2)); background-size: 200% 100%; animation: shimmer 1.2s infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }
.empty, .error-state { text-align: center; padding: var(--space-6) var(--space-4); border: 1px dashed var(--border); border-radius: var(--radius-lg); color: var(--muted); }
.error-state { color: var(--danger-text); background: var(--danger-bg); border-style: solid; }

/* Toasts, dialogs */
.toast-host { position: fixed; inset-inline: 0; bottom: var(--space-4); display: flex; flex-direction: column; align-items: center; gap: var(--space-2); pointer-events: none; z-index: 1000; padding: 0 var(--space-4); }
.toast { pointer-events: auto; background: var(--text); color: var(--bg); padding: var(--space-3) var(--space-4); border-radius: var(--radius); box-shadow: var(--shadow); max-width: 560px; display: flex; gap: var(--space-3); align-items: center; }
.toast.ok { background: #14532d; color: #ecfdf5; } .toast.err { background: #7f1d1d; color: #fef2f2; }
dialog.sheet { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 0; background: var(--bg); color: var(--text); width: min(560px, calc(100vw - 32px)); max-height: 90vh; box-shadow: var(--shadow); }
dialog.sheet::backdrop { background: rgba(2,6,23,.55); }
dialog.sheet .sheet-body { padding: var(--space-5); overflow: auto; max-height: calc(90vh - 2px); }
.sheet-head { display: flex; justify-content: space-between; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }

/* Public shell */
.topnav { position: sticky; top: 0; z-index: 50; background: var(--nav-bg); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.topnav .container { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--text); font-weight: 800; letter-spacing: -.01em; }
.brand img { height: 34px; width: auto; }
.nav-links { display: flex; gap: var(--space-1); align-items: center; list-style: none; margin: 0; padding: 0; }
.nav-links a, .nav-links button { display: inline-flex; align-items: center; min-height: 44px; padding: 0 var(--space-3); border-radius: var(--radius); color: var(--text); text-decoration: none; font-weight: 600; background: none; border: 0; font: inherit; cursor: pointer; }
.nav-links a:hover, .nav-links button:hover, .nav-links a[aria-current="page"] { background: var(--accent-soft); color: var(--accent-text); }
.nav-toggle { display: none; }
@media (max-width: 840px) {
  .nav-toggle { display: inline-flex; }
  .nav-links { display: none; position: absolute; left: 0; right: 0; top: 64px; flex-direction: column; align-items: stretch; background: var(--bg); border-bottom: 1px solid var(--border); padding: var(--space-3); }
  .nav-links.open { display: flex; }
}
.hero { position: relative; color: #fff; background: #0f1c3f url('/assets/stock-1.webp') center/cover no-repeat; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(10,19,48,.92) 0%, rgba(29,78,216,.78) 55%, rgba(10,19,48,.6) 100%); }
.hero .container { position: relative; padding: var(--space-8) 0; display: grid; gap: var(--space-5); max-width: 860px; margin-inline: auto; }
.hero h1 { font-size: var(--fs-hero); line-height: 1.05; letter-spacing: -.02em; color: #fff; margin: 0; }
.hero p.lede { font-size: var(--fs-lg); color: #e6edf7; max-width: 640px; margin: 0; }
.hero .eyebrow { color: #c7d7ff; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: var(--fs-xs); margin: 0; }
.hero .actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.hero-stats { display: flex; flex-wrap: wrap; gap: var(--space-5); color: #e6edf7; font-size: var(--fs-sm); }
.hero-stats strong { display: block; font-size: var(--fs-xl); color: #fff; }
section.block { padding: var(--space-7) 0; }
section.block.alt { background: var(--surface); }
.feature { display: grid; gap: var(--space-3); }
.feature .icon-wrap { width: 44px; height: 44px; border-radius: 12px; background: var(--accent-soft); color: var(--accent-text); display: grid; place-items: center; }
.split { display: grid; gap: var(--space-6); grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); align-items: center; }
.split img { border-radius: var(--radius-lg); aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.pricing-card .price-line { display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-3); margin-top: auto; padding-top: var(--space-3); border-top: 1px solid var(--border); }
.pricing-card h4 { margin-bottom: var(--space-2); min-height: 2.6em; }
footer.site-footer { background: var(--sidebar-bg); color: var(--sidebar-text); padding: var(--space-7) 0 var(--space-5); margin-top: var(--space-7); }
footer.site-footer a { color: #c7d7ff; }
.footer-grid { display: grid; gap: var(--space-5); grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.trust { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-5); padding-top: var(--space-4); border-top: 1px solid rgba(255,255,255,.15); font-size: var(--fs-sm); color: #c7d1e6; }
.page { padding: var(--space-6) 0 var(--space-8); }
.page-head { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; justify-content: space-between; margin-bottom: var(--space-5); }

/* Admin shell */
.admin { display: grid; grid-template-columns: 250px 1fr; min-height: 100vh; }
.sidebar { background: var(--sidebar-bg); color: var(--sidebar-text); padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-4); position: sticky; top: 0; height: 100vh; overflow: auto; }
.sidebar .brand { color: #fff; }
.sidebar nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar nav a { display: flex; gap: var(--space-3); align-items: center; min-height: 44px; padding: 0 var(--space-3); border-radius: var(--radius); color: var(--sidebar-text); text-decoration: none; font-weight: 600; font-size: var(--fs-sm); }
.sidebar nav a:hover { background: rgba(255,255,255,.08); }
.sidebar nav a[aria-current="page"] { background: var(--sidebar-active); color: #fff; }
.sidebar .group { color: var(--sidebar-muted); font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .08em; padding: var(--space-3) var(--space-3) var(--space-1); }
.admin-main { min-width: 0; display: flex; flex-direction: column; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); min-height: 64px; padding: 0 var(--space-5); border-bottom: 1px solid var(--border); background: var(--nav-bg); position: sticky; top: 0; z-index: 40; }
.admin-content { padding: var(--space-5); flex: 1; }
.sidebar-toggle { display: none; }
@media (max-width: 960px) {
  .admin { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: min(280px, 85vw); transform: translateX(-100%); transition: transform .2s; z-index: 60; }
  .sidebar.open { transform: none; }
  .sidebar-toggle { display: inline-flex; }
  .admin-content { padding: var(--space-4); }
}
.scrim { position: fixed; inset: 0; background: rgba(2,6,23,.5); z-index: 55; display: none; }
.scrim.open { display: block; }
.chart { width: 100%; height: auto; }
.tabs { display: flex; gap: var(--space-1); border-bottom: 1px solid var(--border); margin-bottom: var(--space-4); overflow-x: auto; }
.tabs button { all: unset; cursor: pointer; padding: 10px 14px; min-height: 44px; font-weight: 600; color: var(--muted); border-bottom: 3px solid transparent; white-space: nowrap; }
.tabs button[aria-selected="true"] { color: var(--accent-text); border-bottom-color: var(--accent); }

/* Schedule board */
.board { display: grid; grid-template-columns: 180px repeat(7, minmax(120px, 1fr)); min-width: 1000px; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; background: var(--surface); }
.board .cell { border-bottom: 1px solid var(--border); border-right: 1px solid var(--border); padding: 6px; min-height: 72px; }
.board .head { background: var(--surface-2); font-weight: 700; font-size: var(--fs-sm); position: sticky; top: 0; }
.board .resource { font-weight: 700; font-size: var(--fs-sm); background: var(--surface-2); }
.board .off { background: repeating-linear-gradient(135deg, transparent 0 6px, rgba(100,116,139,.12) 6px 12px); }
.chip { display: block; width: 100%; text-align: left; border: 1px solid var(--border); border-left: 4px solid var(--accent); background: var(--bg); border-radius: 8px; padding: 6px 8px; font: inherit; font-size: var(--fs-xs); color: var(--text); cursor: pointer; margin-bottom: 4px; }
.chip.clash { border-left-color: var(--danger); background: var(--danger-bg); color: var(--danger-text); }
.chip.progress { border-left-color: var(--ok); }
.chip strong { display: block; font-size: var(--fs-sm); }

/* Heatmap */
.map-wrap { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.map-wrap svg { width: 100%; height: auto; display: block; }
.gmap { width: 100%; height: 520px; }
.legend { display: flex; flex-wrap: wrap; gap: var(--space-3); font-size: var(--fs-sm); align-items: center; }
.legend .swatch { width: 14px; height: 14px; border-radius: 50%; display: inline-block; margin-right: 6px; vertical-align: middle; }
.site-pin { cursor: pointer; }
.site-pin:hover circle.core, .site-pin:focus circle.core { stroke-width: 3; }

/* Evidence */
.evidence-grid { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
.evidence-grid img { border-radius: var(--radius); aspect-ratio: 1; object-fit: cover; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-3); }
.step { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-4); background: var(--surface); }
.step.done { border-color: var(--ok); }
.step .req { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.capture-bar { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-3); }
.capture-bar .btn { position: relative; }
.ev.pending { outline: 2px dashed var(--warn); outline-offset: 2px; border-radius: var(--radius); }
.evidence-grid figcaption { margin-top: 4px; }
.net-banner { position: fixed; left: 0; right: 0; bottom: 0; z-index: 70; background: #7c2d12; color: #fff7ed; padding: 10px 16px; font-size: var(--fs-sm); text-align: center; }
.net-banner[hidden] { display: none; }
select[multiple] { min-height: 120px; padding: 6px; }
select[multiple] option { padding: 6px 8px; min-height: 32px; }
.doc { background: #fff; color: #0f172a; padding: var(--space-6); border-radius: var(--radius-lg); border: 1px solid var(--border); }
.doc h1 { font-size: var(--fs-2xl); } .doc h2 { font-size: var(--fs-lg); margin-top: var(--space-5); }
.doc-brand { color: #1d4ed8; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: var(--fs-xs); }
.doc-grid { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; } .doc-grid dt { font-weight: 700; } .doc-grid dd { margin: 0; }
.doc table { font-size: var(--fs-sm); } .doc th, .doc td { border-bottom: 1px solid #e2e8f0; }
.doc-warn { background: #fef3c7; color: #713f12; padding: 8px 12px; border-radius: 8px; }
.doc-foot { margin-top: var(--space-6); color: #475569; font-size: var(--fs-xs); }
@media (max-width: 900px) { .card-grid[style*="grid-template-columns"] { grid-template-columns: 1fr !important; } .hero .container { padding: var(--space-7) 0; } }
@media print { .topnav, .sidebar, .topbar, footer, .no-print { display: none !important; } .admin { display: block; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }