/* Transport Fever 3 Calculator — styles, built on the gamekit design tokens
 * (gamekit.css, loaded first). Mobile-first, automatic dark mode via the
 * token system, motion respects prefers-reduced-motion. */

:root {
  /* Brand reskin: industrial amber, distinct from the puzzle-game teal. */
  --gk-accent: #b45309;
  --gk-accent-strong: #92400e;
  --gk-accent-contrast: #ffffff;
  --gk-accent-soft: #fdf0dd;

  /* Alias gamekit tokens to local names used throughout this sheet. */
  --accent: var(--gk-accent);
  --accent-dark: var(--gk-accent-strong);
  --accent-soft: var(--gk-accent-soft);
  --ink: var(--gk-ink);
  --ink-soft: var(--gk-ink-soft);
  --bg: var(--gk-bg);
  --card: var(--gk-surface);
  --line: var(--gk-line);
  --radius: var(--gk-radius);
  --shadow: var(--gk-shadow);
  --shadow-sm: var(--gk-shadow-sm);
  --font: var(--gk-font-sans);
  --display: var(--gk-font-display);
  --maxw: var(--gk-maxw);
}

@media (prefers-color-scheme: dark) {
  :root {
    --gk-accent: #e8a04b;
    --gk-accent-strong: #f2bc7d;
    --gk-accent-contrast: #241300;
    --gk-accent-soft: #33240f;
  }
}

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 max(20px, env(safe-area-inset-left)) 0 max(20px, env(safe-area-inset-right));
}

h1, h2, h3 { line-height: 1.15; color: var(--ink); font-family: var(--display); }
h1 { font-size: var(--gk-fs-2xl); margin: 0 0 0.4em; letter-spacing: -0.01em; }
h2 { font-size: var(--gk-fs-xl); margin: 1.6em 0 0.5em; }
h3 { font-size: var(--gk-fs-lg); margin: 1.2em 0 0.3em; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.muted { color: var(--ink-soft); }
.small { font-size: var(--gk-fs-sm); }
.section-lead { font-size: var(--gk-fs-lg); color: var(--ink-soft); max-width: 60ch; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: var(--gk-space-4);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--gk-accent-contrast);
  padding: 8px 14px;
  border-radius: 0 0 8px 0;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* Header / nav */
.site-header {
  background: color-mix(in srgb, var(--card) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(8px);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
  padding-top: env(safe-area-inset-top);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--gk-space-3);
  min-height: 58px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; font-size: 1.1rem; font-family: var(--display); }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}
.site-nav { display: flex; gap: 2px; align-items: center; margin-left: auto; }
.site-nav a {
  color: var(--ink-soft);
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.96rem;
}
.site-nav a:hover { background: var(--accent-soft); color: var(--accent-dark); text-decoration: none; }
.site-nav a.active { color: var(--accent-dark); background: var(--accent-soft); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; min-width: var(--gk-tap); min-height: var(--gk-tap); margin-left: auto; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: transform .2s; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); margin-top: var(--gk-space-7); background: var(--card); }
.footer-inner { padding: 24px 20px calc(34px + env(safe-area-inset-bottom)); }
.footer-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 18px 24px; margin-bottom: 18px; }
.footer-col h2 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin: 0 0 8px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.footer-col a { color: var(--ink-soft); font-size: 0.95rem; }
.footer-note { color: var(--ink-soft); font-size: 0.85rem; max-width: 70ch; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  min-height: var(--gk-tap);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 10px 18px;
  font: inherit;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--gk-transition-fast), border-color var(--gk-transition-fast), transform var(--gk-transition-fast), box-shadow var(--gk-transition-fast);
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.btn-primary { background: var(--accent); color: var(--gk-accent-contrast); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); text-decoration: none; }
.btn-ghost { background: var(--card); color: var(--accent-dark); border-color: var(--gk-line-strong); }
.btn-ghost:hover { background: var(--accent-soft); text-decoration: none; }
.btn-sm { min-height: 34px; padding: 4px 12px; font-size: 0.88rem; }

/* Hero */
.hero { padding: 40px 20px 8px; text-align: center; }
.hero h1 { margin-bottom: 0.2em; }
.hero-sub { font-size: 1.15rem; color: var(--ink-soft); max-width: 58ch; margin: 0 auto; }

/* Sections */
.copy-section { padding: 20px; max-width: 780px; }
.copy-section p, .copy-section li { max-width: 68ch; }
.cta-line { margin-top: 22px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.feature-list, .how-steps { padding-left: 1.2em; }
.feature-list li, .how-steps li { margin: 0.5em 0; }

/* Tool cards */
.tool-card { margin: 22px 0; padding: 22px 20px; }
.tool-title { margin-top: 0; }
.tool-sub { color: var(--ink-soft); margin-top: -0.3em; max-width: 70ch; }
.tool-note { color: var(--ink-soft); font-size: 0.92rem; max-width: 76ch; }

/* Estimator form */
.tool-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin: 14px 0 8px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-weight: 600; font-size: 0.92rem; color: var(--ink); }
.field input, .field select {
  font: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--gk-line-strong);
  border-radius: var(--gk-radius-sm);
  padding: 10px 12px;
  min-height: var(--gk-tap);
}
.field input:focus-visible, .field select:focus-visible { outline: 3px solid var(--accent); outline-offset: 1px; }
.field-submit { justify-content: flex-end; }

.form-error {
  background: color-mix(in srgb, var(--gk-danger) 12%, var(--card));
  border: 1px solid var(--gk-danger);
  color: var(--ink);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-weight: 600;
}

/* Results */
.results { border-top: 1px solid var(--line); margin-top: 18px; padding-top: 8px; }
.results-title { margin-bottom: 0.6em; }
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin: 0 0 12px;
}
.results-grid > div {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}
.results-grid dt { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-soft); }
.results-grid dd { margin: 2px 0 0; font-weight: 800; font-size: 1.15rem; font-variant-numeric: tabular-nums; font-family: var(--display); }
.assumptions { margin: 8px 0; }
.assumptions summary { cursor: pointer; font-weight: 600; color: var(--accent-dark); }
.assumptions ul { margin: 8px 0 0; padding-left: 1.2em; }
.assumptions li { margin: 0.35em 0; color: var(--ink-soft); max-width: 72ch; }
.results-share { margin: 8px 0 0; }

/* Class tabs */
.class-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.class-tab {
  min-height: var(--gk-tap);
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px;
  border-radius: var(--gk-radius-pill);
  background: var(--card);
  border: 1px solid var(--gk-line-strong);
  color: var(--accent-dark);
  font-weight: 600; font-size: 0.92rem;
}
.class-tab:hover { background: var(--accent-soft); text-decoration: none; }
.class-tab.current { background: var(--accent); color: var(--gk-accent-contrast); border-color: var(--accent); }
.class-count { font-size: 0.8em; opacity: 0.75; font-variant-numeric: tabular-nums; }

/* Data tables */
.table-filter-wrap { display: flex; align-items: center; gap: 10px; margin: 4px 0 10px; }
.table-filter-wrap[hidden] { display: none; }
.table-filter-wrap label { font-weight: 600; font-size: 0.92rem; }
.table-filter-wrap input {
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--gk-line-strong); border-radius: var(--gk-radius-sm);
  padding: 8px 12px; min-height: 40px; min-width: 200px;
}
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: var(--radius-sm); }
.table-hint { display: none; margin: 0 0 6px; font-size: 0.85rem; color: var(--ink-soft); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; white-space: nowrap; }
.data-table th, .data-table td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table thead th { color: var(--accent-dark); font-family: var(--display); background: var(--card); position: sticky; top: 0; }
.data-table thead th a { color: inherit; display: inline-flex; gap: 4px; align-items: center; }
.data-table thead th a:hover { text-decoration: underline; }
.data-table tbody th { font-weight: 700; color: var(--ink); }
.data-table tbody tr:hover { background: var(--accent-soft); }
.data-table td { font-variant-numeric: tabular-nums; }
.data-table .no-sort { width: 1%; }
.sort-ind { font-size: 0.75em; }
tr.filtered-out { display: none; }

/* FAQ */
.faq-section { margin-top: 10px; }
.faq { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.faq-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
.faq-item summary { cursor: pointer; padding: 14px 18px; font-weight: 600; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--accent); font-weight: 700; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-answer { padding: 0 18px 14px; }
.faq-answer p { margin: 0; color: var(--ink-soft); max-width: none; }

/* Comparison table (landing) */
.compare-wrap { overflow-x: auto; }
.compare-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.compare-table th, .compare-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare-table thead th { color: var(--accent-dark); font-family: var(--display); }
.compare-table tbody th { font-weight: 700; color: var(--ink); }

/* Error page */
.error-section { text-align: center; padding-top: 48px; padding-bottom: 48px; }
.error-section .cta-line { justify-content: center; }

/* Ezoic ad spot */
.ezoicad { margin: 26px auto 0; max-width: var(--maxw); }

@media (max-width: 860px) {
  body { font-size: 16px; }
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
    background: var(--card);
    border-bottom: 1px solid var(--line);
    padding: 8px 16px 14px;
    gap: 2px;
    display: none;
    box-shadow: var(--shadow);
  }
  .site-header.nav-open .site-nav { display: flex; }
  .site-nav a { padding: 12px 10px; }
  .hero { padding: 28px 20px 4px; }
  .tool-card { padding: 16px 14px; }
  .table-hint { display: block; }
}