:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #0ea5e9;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #dc2626;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}
.admin-topbar {
  background: rgba(15, 23, 42, 0.96);
  border-bottom-color: #1e293b;
}
.admin-topbar .brand,
.admin-topbar .nav-link,
.admin-topbar .nav-button {
  color: #e2e8f0;
}
.admin-topbar .nav-link:hover,
.admin-topbar .nav-button:hover,
.admin-topbar .nav-link.active {
  color: #fff;
  background: #1e293b;
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  min-height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0;
  margin-right: 12px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: inline-grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  font-size: 15px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  flex-wrap: wrap;
}

.nav-link, .nav-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 10px;
  padding: 8px 10px;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.nav-link:hover, .nav-button:hover, .nav-link.active {
  color: var(--primary);
  background: #eff6ff;
}

.nav-form { margin: 0; }

.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 24px 56px;
}

.page-narrow { max-width: 760px; }

.page-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.eyebrow {
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
}

h1, h2, h3 { line-height: 1.15; letter-spacing: 0; }
h1 { font-size: 34px; margin: 0 0 10px; }
h2 { font-size: 20px; margin: 0 0 16px; }
h3 { font-size: 16px; margin: 0 0 10px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.danger-text { color: var(--danger); font-weight: 750; }
.success-text { color: var(--success); font-weight: 750; }

.hero {
  padding: 56px 0 26px;
}

.hero-card {
  padding: 44px;
  margin-bottom: 26px;
}

.hero h1 {
  max-width: 760px;
  font-size: clamp(38px, 6vw, 68px);
}

.hero p {
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 22px;
}

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.layout-main-aside { grid-template-columns: minmax(0, 1.8fr) minmax(300px, 0.8fr); align-items: start; }
.layout-split { grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr); align-items: start; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}

.card.compact { padding: 16px; }
.stack { display: grid; gap: 18px; }

.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.stat-link {
  display: block;
  color: var(--text);
}
.stat-link:hover {
  border-color: var(--primary);
  color: var(--text);
}

.stat-value {
  display: block;
  font-size: 27px;
  line-height: 1.1;
  font-weight: 850;
  color: var(--text);
  margin-bottom: 5px;
}

.stat-label { color: var(--muted); font-size: 13px; font-weight: 750; }

.button, button.primary, button.secondary, button.ghost, button.danger, .button-secondary, .button-ghost, button.button-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
  text-decoration: none;
}

.button, button.primary {
  background: var(--primary);
  color: #fff;
}
.button:hover, button.primary:hover { background: var(--primary-dark); color: #fff; }
button.danger {
  background: var(--danger);
  color: #fff;
}
button.danger:hover {
  background: #b91c1c;
  color: #fff;
}

.button-secondary, button.secondary {
  background: #e0f2fe;
  border-color: #bae6fd;
  color: #075985;
}

.button-success {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 14px;
  border-radius: 10px;
  border: 1px solid #86efac;
  background: #dcfce7;
  color: #166534;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.button-ghost, button.ghost, button.button-ghost {
  background: #fff;
  border-color: var(--border);
  color: var(--text);
}

.button-disabled {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: #94a3b8;
  background: #f8fafc;
  font-weight: 750;
}

.form-grid { display: grid; gap: 16px; }
.form-row { display: grid; gap: 8px; }
.form-row.inline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-row-button { align-self: end; }
label { font-weight: 750; color: #334155; }
input, select, textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 11px 12px;
  background: #fff;
  color: var(--text);
  font: inherit;
}
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: 3px solid #dbeafe;
  border-color: var(--primary);
}

.choice-row { display: flex; flex-wrap: wrap; gap: 10px; }
.choice {
  position: relative;
}
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span {
  display: inline-flex;
  min-width: 86px;
  justify-content: center;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  font-weight: 800;
}
.choice input:checked + span {
  border-color: var(--primary);
  background: #eff6ff;
  color: var(--primary);
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.option-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.option-card {
  display: grid;
  gap: 6px;
  text-align: left;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  color: var(--text);
  cursor: pointer;
  font: inherit;
}
.option-card strong { font-size: 15px; }
.option-card span { color: var(--muted); font-size: 13px; }
.option-card.active {
  border-color: var(--primary);
  background: #eff6ff;
  box-shadow: inset 0 0 0 1px var(--primary);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.quote-line {
  padding: 12px 14px;
  border: 1px solid #bfdbfe;
  border-radius: 12px;
  background: #eff6ff;
  color: #1e40af;
  font-weight: 750;
  margin-bottom: 16px;
}
.section-block { margin-top: 24px; }
.feature-list { padding-left: 18px; margin-top: 8px; }
.compact-stat { box-shadow: none; margin-bottom: 14px; }
.small-link {
  margin-top: 18px;
  font-size: 12px;
}
.result-preview {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  background: #f8fafc;
}
.result-preview pre {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 13px;
  color: #1e293b;
}
.preview-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  background: #f8fafc;
}
.preview-3d-box {
  width: 100%;
  height: 320px;
  min-height: 320px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
}
.preview-3d-box canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
}
.preview-3d-message {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  padding: 16px;
  color: var(--muted);
  font-weight: 750;
  text-align: center;
}
.preview-3d-message.error {
  color: var(--danger);
}
.preview-error {
  margin-top: 8px;
  color: var(--danger);
  font-weight: 750;
}
.salt-row {
  grid-template-columns: 0.8fr 0.8fr 0.9fr 0.8fr 1fr auto;
  align-items: end;
}
.choice-inline {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 750;
}
.danger-zone {
  border-color: #fecaca;
  background: #fff7f7;
}
.image-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.image-grid figure {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
}
.image-grid img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}
.image-grid figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.alert {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid;
  margin-bottom: 16px;
}
.alert-danger { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.alert-info { background: #eff6ff; border-color: #bfdbfe; color: #1e40af; }
.alert-warning { background: #fffbeb; border-color: #fde68a; color: #92400e; }
.alert-success { background: #ecfdf5; border-color: #a7f3d0; color: #065f46; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: #475569; background: #f8fafc; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
td { color: #1e293b; }

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 12px;
  font-weight: 850;
  line-height: 1;
  white-space: nowrap;
}
.submitted, .unbilled, .unpaid { background: #e2e8f0; color: #334155; }
.approved { background: #dbeafe; color: #1d4ed8; }
.picked { background: #ede9fe; color: #6d28d9; }
.running { background: #ffedd5; color: #c2410c; }
.completed, .succeeded, .result_ready, .billed, .paid { background: #dcfce7; color: #166534; }
.failed, .rejected, .billing_failed { background: #fee2e2; color: #991b1b; }
.skipped, .manual_quote { background: #fef3c7; color: #92400e; }

.definition-list {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 12px 16px;
  margin: 0;
}
.definition-list dt { color: var(--muted); font-weight: 750; }
.definition-list dd { margin: 0; overflow-wrap: anywhere; }

.progress {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}
.progress-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.progress-step {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
  color: var(--muted);
  font-weight: 800;
}
.progress-step.active { border-color: var(--primary); background: #eff6ff; color: var(--primary); }
.progress-step.done { border-color: #bbf7d0; background: #f0fdf4; color: var(--success); }
.progress-step.failed { border-color: #fecaca; background: #fef2f2; color: var(--danger); }

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.filter-bar {
  display: grid;
  grid-template-columns: 180px 1fr 1fr auto;
  gap: 12px;
  align-items: end;
}

.footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.hidden { display: none !important; }

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4, .grid-5, .grid-6, .layout-main-aside, .layout-split, .filter-bar, .option-grid, .option-grid.compact, .progress-5, .image-grid, .salt-row {
    grid-template-columns: 1fr;
  }
  .page-header { display: block; }
  .definition-list { grid-template-columns: 1fr; }
  .nav { align-items: flex-start; padding-top: 12px; padding-bottom: 12px; }
}