/* Know Your Skin — marketing + legal site
 * Single stylesheet shared across all pages.
 * Mobile-first, light + dark mode, system fonts. */

:root {
  color-scheme: light dark;

  --bg: #fafaf7;
  --surface: #ffffff;
  --text: #1a1a1a;
  --text-muted: #666666;
  --text-faint: #999999;
  --border: #e6e4dd;
  --accent: #d4a5a5;       /* dusty rose */
  --accent-strong: #a87878;
  --accent-contrast: #ffffff;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 24px rgba(0, 0, 0, 0.04);

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 24px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-serif: "New York", "Iowan Old Style", "Apple Garamond", Georgia,
                "Times New Roman", serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14120f;
    --surface: #1c1a17;
    --text: #f2efe8;
    --text-muted: #a8a39a;
    --text-faint: #7a756c;
    --border: #2a2722;
    --accent: #d4a5a5;
    --accent-strong: #e8c0c0;
    --accent-contrast: #14120f;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 4px 24px rgba(0, 0, 0, 0.2);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
  transition: color 120ms ease;
}
a:hover { color: var(--accent); }

img { max-width: 100%; height: auto; }

/* ---------- Layout ---------- */

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.wrap-narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */

.site-header {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 18px;
  color: var(--text);
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  display: inline-block;
}

.site-nav {
  display: flex;
  gap: 24px;
  font-size: 15px;
}

.site-nav a {
  color: var(--text-muted);
}
.site-nav a:hover { color: var(--text); }

/* ---------- Hero ---------- */

.hero {
  padding: 80px 0 64px;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  color: var(--text);
}

.hero .lede {
  font-size: 20px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.5;
}

.store-badges {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px;
  border-radius: var(--radius);
  background: var(--text);
  color: var(--bg);
  font-size: 15px;
  font-weight: 500;
  transition: transform 120ms ease, box-shadow 120ms ease;
  box-shadow: var(--shadow);
}
.store-badge:hover {
  transform: translateY(-2px);
  color: var(--bg);
}
.store-badge svg { width: 24px; height: 24px; flex-shrink: 0; }
.store-badge small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  opacity: 0.7;
  line-height: 1;
  margin-bottom: 2px;
}
.store-badge strong {
  display: block;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.2;
}

/* ---------- Features ---------- */

.features {
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

.features h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 40px);
  text-align: center;
  margin: 0 0 48px;
  letter-spacing: -0.01em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.feature {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.feature h3 {
  font-size: 18px;
  margin: 0 0 8px;
  color: var(--text);
}

.feature p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.55;
  margin: 0;
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-contrast);
  font-size: 20px;
}

/* ---------- Legal / content pages ---------- */

.legal {
  padding: 48px 0 96px;
}

.legal h1 {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

.legal h2 {
  font-size: 20px;
  margin: 48px 0 12px;
  color: var(--text);
}

.legal h3 {
  font-size: 17px;
  margin: 24px 0 8px;
}

.legal p, .legal ul, .legal ol {
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
}

.legal ul, .legal ol { padding-left: 24px; }
.legal li { margin-bottom: 6px; }

.legal .meta {
  color: var(--text-faint);
  font-size: 14px;
  margin: 0 0 32px;
}

.legal code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 14px;
}

/* Callouts */
.callout {
  border-left: 3px solid var(--accent);
  background: var(--surface);
  padding: 16px 20px;
  border-radius: 6px;
  margin: 20px 0;
  color: var(--text-muted);
  font-size: 15px;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  color: var(--text-faint);
  font-size: 14px;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.site-footer a {
  color: var(--text-muted);
  margin-right: 20px;
}

.site-footer a:hover { color: var(--text); }

/* ---------- Utility ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius);
  background: var(--accent-strong);
  color: var(--accent-contrast);
  font-weight: 500;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease;
}
.btn:hover {
  transform: translateY(-1px);
  background: var(--accent);
  color: var(--accent-contrast);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--surface);
  color: var(--text);
}

/* ---------- Mobile tweaks ---------- */

@media (max-width: 640px) {
  .hero { padding: 48px 0 40px; }
  .hero .lede { font-size: 17px; }
  .site-nav { gap: 16px; font-size: 14px; }
  .features { padding: 48px 0; }
  .feature { padding: 24px; }
  .site-footer .wrap { flex-direction: column; }
}