/*
 * Pleino — shared public site styles (site.css)
 *
 * Single source of truth for the marketing/SEO site shell + design tokens.
 * Tokens are the BRAND_SPEC.md SSOT, lifted verbatim from public/index.html.
 * Page-unique CSS (homepage hero/demo, trends chart canvas, report table,
 * the SPA under /app/) stays inline on those surfaces — do NOT add page
 * concepts here. Keep this to shared primitives only.
 *
 * Carried faithfully from the homepage (the mature reference): some rules use
 * 13px / font-weight 500. These match the shipped homepage and are intentional
 * here to keep this a zero-visual-change cohesion pass, not a redesign.
 */

/* ===== Tokens (BRAND_SPEC.md SSOT) ===== */
:root {
  /* Surfaces */
  --background: #1C1F24;
  --foreground: #EAE7E1;
  --surface: #2A2F36;
  --surface-2: #3A3F46;
  --foreground-dim: #B0B5BC;

  /* Borders */
  --border: #3A3F46;

  /* Primary accent */
  --primary: #F2A900;
  --primary-foreground: #1C1F24;

  /* Semantic */
  --success: #22C55E;
  --warning: #F2A900;
  --error: #EF5350;
  --info: #A7C7E7;

  /* On-semantic foregrounds */
  --on-success: #1C1F24;

  /* Shadows — dark-mode optimized (ring + blur) */
  --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.03);
  --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.03);
  --shadow-elevated: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.04);
  --shadow-hero: 0 24px 80px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.04);

  /* Radius scale */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;

  /* Spacing scale (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
  --space-32: 128px;

  /* Motion */
  --ease-entrance: cubic-bezier(0.2, 0, 0, 1);
  --ease-exit: cubic-bezier(0.4, 0, 1, 1);
  --ease-micro: ease-out;
  --duration-instant: 75ms;
  --duration-micro: 150ms;
  --duration-state: 300ms;
  --duration-entrance: 500ms;
  --duration-cinematic: 800ms;
}

/* ===== Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { overflow-x: hidden; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--background);
  color: var(--foreground);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ===== Accessibility ===== */
.skip-link {
  position: absolute;
  top: -9999px;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--primary);
  color: var(--primary-foreground);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  z-index: 50;
  text-decoration: none;
}
.skip-link:focus { top: var(--space-2); }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
:focus:not(:focus-visible) { outline: none; }

/* ===== Layout container ===== */
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
  width: 100%;
}

/* ===== Site header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(28, 31, 36, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--foreground);
  flex-shrink: 0;
}
.brand-mark { display: block; }
.brand-word { font-size: 19px; font-weight: 800; letter-spacing: -0.02em; }
.brand-word span { color: var(--primary); }
.site-nav { display: flex; align-items: center; gap: var(--space-8); margin: 0 auto; }
.site-nav a {
  color: var(--foreground-dim);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color var(--duration-micro) var(--ease-micro);
}
.site-nav a:hover { color: var(--foreground); }
.site-nav a.active, .site-nav a[aria-current="page"] { color: var(--foreground); font-weight: 700; }
.site-header-actions { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: var(--primary);
  color: var(--primary-foreground);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: filter var(--duration-micro) var(--ease-micro);
}
.nav-cta:hover { filter: brightness(1.08); }
.lang-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--foreground-dim);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--duration-micro) var(--ease-micro), border-color var(--duration-micro) var(--ease-micro);
}
.lang-toggle:hover { color: var(--foreground); border-color: var(--foreground-dim); }

/* ===== Breadcrumb ===== */
.breadcrumb {
  font-size: 14px;
  color: var(--foreground-dim);
  padding-top: var(--space-6);
}
.breadcrumb a { color: var(--primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* ===== Page header (subpages) ===== */
.page-title {
  font-size: clamp(24px, 2vw + 0.5rem, 32px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--space-2);
}
.subtitle, .page-intro {
  font-size: 14px;
  color: var(--foreground-dim);
  line-height: 1.55;
  margin-bottom: var(--space-8);
  max-width: 60ch;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 var(--space-6);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: filter var(--duration-micro) var(--ease-micro), border-color var(--duration-micro) var(--ease-micro);
}
.btn-primary { background: var(--primary); color: var(--primary-foreground); border: 1px solid var(--primary); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-secondary { background: transparent; color: var(--foreground); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--foreground-dim); }

/* ===== Sections ===== */
.section {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  border-top: 1px solid var(--border);
}
.section-title {
  font-size: clamp(22px, 1.8vw + 0.5rem, 32px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}
.section-lead {
  font-size: clamp(15px, 0.6vw + 0.7rem, 18px);
  color: var(--foreground-dim);
  line-height: 1.6;
  max-width: 60ch;
  margin-bottom: var(--space-8);
}
.section-lead:last-child { margin-bottom: 0; }

/* ===== Cards ===== */
.card-grid { display: grid; gap: var(--space-4); }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.info-card, .data-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.info-card-title { font-size: 16px; font-weight: 700; margin-bottom: var(--space-2); }
.info-card-body { font-size: 14px; color: var(--foreground-dim); line-height: 1.55; }
.info-card-link {
  display: inline-block;
  margin-top: var(--space-3);
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}
.info-card-link:hover { text-decoration: underline; }
.equation {
  margin-top: var(--space-8);
  padding: var(--space-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  font-size: clamp(16px, 1vw + 0.6rem, 20px);
  font-weight: 700;
  color: var(--foreground);
}

/* ===== Stat cards (data-product surfaces: trends, report) ===== */
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}
.stat-label {
  font-size: 12px;
  color: var(--foreground-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-1);
}
.stat-value { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-sub { font-size: 12px; color: var(--foreground-dim); margin-top: var(--space-1); }
.stat-value.rising { color: var(--warning); }
.stat-value.falling { color: var(--success); }
.stat-value.stable { color: var(--foreground-dim); }

/* ===== City links ===== */
.city-links { margin-top: var(--space-8); }
.city-links h3 { font-size: 14px; margin-bottom: var(--space-3); }
.city-links-grid { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.city-links-grid a {
  font-size: 14px;
  color: var(--primary);
  text-decoration: none;
  background: var(--surface);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
}
.city-links-grid a:hover { background: var(--surface-2); }

/* ===== Loading / empty states ===== */
.loading { color: var(--foreground-dim); font-size: 14px; padding: var(--space-4); text-align: center; }

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}
.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-6);
}
.app-store-badge { display: inline-block; flex-shrink: 0; }
.app-store-badge img { display: block; }
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-6); }
.footer-links a {
  color: var(--foreground-dim);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--duration-micro) var(--ease-micro);
}
.footer-links a:hover { color: var(--foreground); }

/* ===== Cookie consent banner (Law 25) ===== */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-3) var(--space-4);
  z-index: 1000;
  font-size: 13px;
  color: var(--foreground-dim);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.cookie-banner span { flex: 1; min-width: 200px; }
body.has-cookie-banner { padding-bottom: 140px; }
.cookie-privacy-link { color: var(--primary); text-decoration: underline; margin-left: var(--space-1); font-size: 13px; }
.cookie-actions { display: flex; gap: var(--space-2); flex-shrink: 0; }
.cookie-actions button {
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
#cookie-accept { background: var(--primary); color: var(--primary-foreground); }
#cookie-refuse { background: var(--surface-2); color: var(--foreground-dim); }

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .card-grid-3, .card-grid-2 { grid-template-columns: 1fr; }
  .section { padding-top: var(--space-12); padding-bottom: var(--space-12); }
}
@media (max-width: 720px) {
  .site-nav { display: none; }
  .site-footer-inner { justify-content: flex-start; }
  .stat-grid { grid-template-columns: 1fr; }
}