/* ===== CSS Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg: #0f0d0b;
  --c-surface: #1a1714;
  --c-surface-2: #242019;
  --c-surface-3: #2e2820;
  --c-border: #3a3328;
  --c-text: #f0ebe3;
  --c-text-muted: #a89f91;
  --c-text-dim: #7a7165;
  --c-accent: #f59e0b;
  --c-accent-light: #fbbf24;
  --c-accent-dark: #d97706;
  --c-green: #34d399;
  --c-red: #f87171;
  --c-blue: #60a5fa;
  --c-purple: #a78bfa;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.35);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.25);
  --font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c-accent-light); text-decoration: none; transition: color var(--transition); }
a:hover, a:focus-visible { color: var(--c-accent); }
img, svg { display: block; max-width: 100%; }
button, input, select { font: inherit; color: inherit; }
ul, ol { list-style: none; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.skip-link { position: absolute; top: -100%; left: 16px; background: var(--c-accent); color: #000; padding: 8px 16px; border-radius: var(--radius-sm); z-index: 9999; font-weight: 600; }
.skip-link:focus { top: 16px; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 13, 11, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text);
  font-weight: 700;
  font-size: 1.15rem;
  flex-shrink: 0;
}
.logo:hover { color: var(--c-text); }
.logo-icon { color: var(--c-accent); flex-shrink: 0; }
.logo-accent { color: var(--c-accent); }
.nav {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.nav::-webkit-scrollbar { display: none; }
.nav a {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--c-text-muted);
  white-space: nowrap;
  transition: all var(--transition);
}
.nav a:hover, .nav a:focus-visible {
  color: var(--c-text);
  background: var(--c-surface-2);
}

/* ===== Hero ===== */
.hero {
  padding: 80px 0 64px;
  background: linear-gradient(170deg, var(--c-surface) 0%, var(--c-bg) 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245,158,11,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  background: rgba(245,158,11,0.1);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--c-text-muted);
  margin-bottom: 28px;
  max-width: 520px;
}
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-card-stack {
  position: relative;
  width: 260px;
  height: 260px;
}
.hero-mini-card {
  position: absolute;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow);
  width: 140px;
}
.hero-mini-card .mc-icon { font-size: 2rem; }
.hero-mini-card .mc-label { font-size: 0.8rem; font-weight: 600; color: var(--c-text-muted); }
.card-1 { top: 0; left: 50%; transform: translateX(-50%); }
.card-2 { bottom: 0; left: 0; }
.card-3 { bottom: 0; right: 0; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
}
.btn-primary {
  background: var(--c-accent);
  color: #000;
  border-color: var(--c-accent);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--c-accent-light);
  border-color: var(--c-accent-light);
  color: #000;
}
.btn-outline {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-border);
}
.btn-outline:hover, .btn-outline:focus-visible {
  border-color: var(--c-accent);
  color: var(--c-accent-light);
}
.btn-lg { padding: 14px 28px; font-size: 1rem; border-radius: var(--radius); }

/* ===== Section Styles ===== */
section { padding: 64px 0; }
section:nth-child(even) { background: var(--c-surface); }
.section-sub {
  color: var(--c-text-muted);
  margin-bottom: 32px;
  max-width: 600px;
}

/* ===== Planner ===== */
.planner-section { padding-top: 48px; }
.planner-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.planner-inputs h2 { font-size: 1.5rem; margin-bottom: 8px; }
.input-group {
  margin-bottom: 24px;
}
.input-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
}
.input-value {
  color: var(--c-accent);
  font-weight: 700;
  font-size: 0.85rem;
}
input[type="range"] {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--c-surface-3);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--c-accent);
  border: 3px solid var(--c-bg);
  box-shadow: 0 0 0 2px var(--c-accent);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--c-accent);
  border: 3px solid var(--c-bg);
  box-shadow: 0 0 0 2px var(--c-accent);
  cursor: pointer;
}
input[type="range"]:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px var(--c-accent-light);
}
.input-range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--c-text-dim);
  margin-top: 4px;
}
.input-select {
  width: 100%;
  padding: 10px 14px;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color var(--transition);
}
.input-select:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(245,158,11,0.15);
}
.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== Results Panel ===== */
.planner-results {
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.results-sticky { position: sticky; top: 80px; }
.planner-results h2 { font-size: 1.25rem; margin-bottom: 16px; }
.result-summary {
  background: var(--c-surface-3);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: var(--c-text-muted);
  line-height: 1.5;
}
.result-block { margin-bottom: 20px; }
.result-block h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-accent);
  margin-bottom: 8px;
}
.result-list li {
  padding: 6px 0;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.result-list li:last-child { border-bottom: none; }
.result-list li::before {
  content: '›';
  color: var(--c-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.result-warnings {
  background: rgba(248,113,113,0.08);
  border: 1px solid rgba(248,113,113,0.2);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}
.result-warnings h3 { color: var(--c-red); }
.result-warnings .result-list li::before { content: '⚠'; color: var(--c-red); }
.result-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.result-tip {
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--c-text-dim);
  font-style: italic;
}

/* ===== Presets ===== */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.preset-card {
  background: var(--c-surface-2);
  border: 2px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.preset-card:hover, .preset-card:focus-visible {
  border-color: var(--c-accent);
  background: var(--c-surface-3);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.preset-emoji { font-size: 1.8rem; }
.preset-name { font-weight: 700; font-size: 0.95rem; }
.preset-detail { font-size: 0.8rem; color: var(--c-text-dim); }

/* ===== Footwear Table ===== */
.table-wrap { overflow-x: auto; }
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.compare-table th {
  text-align: left;
  padding: 12px 16px;
  background: var(--c-surface-3);
  color: var(--c-accent);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--c-border);
  white-space: nowrap;
}
.compare-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text-muted);
  vertical-align: top;
}
.compare-table td:first-child {
  font-weight: 600;
  color: var(--c-text);
  white-space: nowrap;
}
.compare-table tbody tr:hover td { background: var(--c-surface-3); }

/* ===== Mistakes ===== */
.mistake-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.mistake-card {
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-left: 4px solid var(--c-red);
  border-radius: var(--radius);
  padding: 20px;
}
.mistake-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--c-text);
}
.mistake-card p {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.55;
}

/* ===== Checklist ===== */
.checklist-card {
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.checklist-header {
  text-align: center;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 2px dashed var(--c-border);
}
.checklist-header h3 {
  font-size: 1.3rem;
  margin-bottom: 6px;
}
.checklist-meta {
  font-size: 0.85rem;
  color: var(--c-text-dim);
}
.checklist-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.checklist-columns h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-accent);
  margin-bottom: 12px;
}
.checklist-columns li {
  padding: 8px 0;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.checklist-columns li::before {
  content: '☐';
  flex-shrink: 0;
  color: var(--c-text-dim);
  font-size: 1rem;
}
.checklist-footer {
  text-align: center;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--c-border);
  font-size: 0.75rem;
  color: var(--c-text-dim);
}

/* ===== Guide Section ===== */
.guide-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}
.guide-main h2 { font-size: 1.5rem; margin-bottom: 16px; }
.guide-main h3 {
  font-size: 1.1rem;
  margin-top: 28px;
  margin-bottom: 10px;
  color: var(--c-accent-light);
}
.guide-main p {
  color: var(--c-text-muted);
  margin-bottom: 12px;
  line-height: 1.65;
}
.guide-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.sidebar-card {
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px;
}
.sidebar-card h3 {
  font-size: 0.95rem;
  margin-bottom: 12px;
  color: var(--c-accent);
}
.sidebar-card li {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  padding: 6px 0;
  border-bottom: 1px solid var(--c-border);
  line-height: 1.5;
}
.sidebar-card li:last-child { border-bottom: none; }
.sidebar-card li strong { color: var(--c-text); }

/* ===== Footer ===== */
.site-footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.footer-brand p {
  font-size: 0.85rem;
  color: var(--c-text-dim);
  margin-top: 4px;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}
.footer-nav a {
  font-size: 0.85rem;
  color: var(--c-text-muted);
}
.footer-nav a:hover { color: var(--c-accent-light); }
.footer-meta {
  font-size: 0.78rem;
  color: var(--c-text-dim);
}
.footer-meta a { color: var(--c-text-dim); text-decoration: underline; }
.footer-meta a:hover { color: var(--c-accent-light); }

/* ===== Print Styles ===== */
@media print {
  body { background: #fff; color: #000; font-size: 12px; }
  .site-header, .site-footer, .hero, .planner-inputs, .presets-section, .mistakes-section, .guide-section, .result-actions, .action-row { display: none !important; }
  .planner-section { padding: 0; }
  .planner-layout { display: block; }
  .planner-results { border: none; padding: 0; }
  .results-sticky { position: static; }
  .checklist-card { border: 2px solid #333; padding: 20px; }
  .checklist-columns { gap: 20px; }
  .checklist-columns li::before { content: '☐'; }
  .result-block { margin-bottom: 12px; }
  .result-list li { padding: 3px 0; }
  .result-summary { background: #f5f5f5; border: 1px solid #ddd; }
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-visual { display: none; }
  .planner-layout { grid-template-columns: 1fr; }
  .results-sticky { position: static; }
  .guide-layout { grid-template-columns: 1fr; }
  .checklist-columns { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .hero { padding: 48px 0 40px; }
  section { padding: 40px 0; }
  .preset-grid { grid-template-columns: 1fr 1fr; }
  .mistake-grid { grid-template-columns: 1fr; }
  .result-actions { flex-direction: column; }
  .result-actions .btn { width: 100%; }
  .nav a { padding: 4px 8px; font-size: 0.8rem; }
}
@media (max-width: 400px) {
  .preset-grid { grid-template-columns: 1fr; }
}

/* ===== Focus Styles ===== */
*:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--c-surface-2);
  border: 1px solid var(--c-accent);
  color: var(--c-text);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  z-index: 9999;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.5s forwards;
}
@keyframes toastIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { from { opacity: 1; } to { opacity: 0; } }


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}