/* ============================================================
   DermaSnap Documentation — Shared Stylesheet
   Palette derived from the app's splash colors (#F4E1D0 / #1A1410).
   ============================================================ */

:root {
  --primary:    #b8552a;
  --primary-dk: #8a3d1c;
  --accent:     #c98a3f;
  --bg:         #faf5ee;
  --bg-card:    #ffffff;
  --text:       #2a2018;
  --text-light: #6b5e52;
  --border:     #e8dccc;
  --code-bg:    #f3ebde;
  --warn-bg:    #fff4dc;
  --warn-bd:    #d9a14a;
  --nav-width:  260px;
  --header-h:   64px;
  --radius:     8px;
  --shadow:     0 1px 3px rgba(60,30,10,.10), 0 1px 2px rgba(60,30,10,.06);
  --shadow-lg:  0 4px 16px rgba(60,30,10,.12);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text); background: var(--bg);
  line-height: 1.7; display: flex; flex-direction: column; min-height: 100vh;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h); background: var(--primary); color: #fff;
  display: flex; align-items: center; padding: 0 24px;
  box-shadow: var(--shadow);
}
.site-header h1 { font-size: 1.25rem; font-weight: 600; }
.site-header h1 a { color: #fff; text-decoration: none; }
.site-header .subtitle { opacity: .85; margin-left: 12px; font-size: .875rem; }
.hamburger {
  display: none; background: none; border: none; color: #fff;
  font-size: 1.5rem; cursor: pointer; margin-right: 12px;
}

/* ---------- Layout ---------- */
.layout { display: flex; margin-top: var(--header-h); flex: 1; }

/* ---------- Sidebar ---------- */
.sidebar {
  position: fixed; top: var(--header-h); left: 0; bottom: 0;
  width: var(--nav-width); background: var(--bg-card);
  border-right: 1px solid var(--border);
  overflow-y: auto; padding: 20px 0; z-index: 90;
}
.sidebar nav a {
  display: block; padding: 8px 24px; color: var(--text-light);
  text-decoration: none; font-size: .9rem; transition: all .15s;
}
.sidebar nav a:hover { background: var(--bg); color: var(--primary); }
.sidebar nav a.active {
  color: var(--primary); font-weight: 600;
  border-left: 3px solid var(--primary); padding-left: 21px;
}
.sidebar nav .section-title {
  padding: 16px 24px 4px; font-size: .75rem; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text-light); font-weight: 700;
}

/* ---------- Main ---------- */
.main { margin-left: var(--nav-width); flex: 1; padding: 40px 48px 80px; max-width: 960px; }

/* ---------- Typography ---------- */
h1 { font-size: 2rem; margin-bottom: .5em; line-height: 1.3; color: var(--primary-dk); }
h2 { font-size: 1.5rem; margin: 2em 0 .6em; padding-bottom: .3em; border-bottom: 1px solid var(--border); }
h3 { font-size: 1.2rem; margin: 1.5em 0 .4em; }
h4 { font-size: 1.05rem; margin: 1.2em 0 .3em; }
p  { margin-bottom: 1em; }
a  { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { margin: 0 0 1em 1.5em; }
li { margin-bottom: .3em; }
strong { color: var(--text); }
em { color: var(--text-light); font-style: italic; }

/* ---------- Code ---------- */
code {
  font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: .875em; background: var(--code-bg); padding: 2px 6px;
  border-radius: 4px; color: var(--primary-dk);
}
pre {
  background: #2a2018; color: #f4e1d0; padding: 20px 24px;
  border-radius: var(--radius); overflow-x: auto; margin: 1em 0;
  box-shadow: var(--shadow);
}
pre code { background: transparent; color: inherit; padding: 0; }

/* ---------- Tables ---------- */
table {
  border-collapse: collapse; width: 100%; margin: 1em 0;
  background: var(--bg-card); box-shadow: var(--shadow); border-radius: var(--radius);
  overflow: hidden;
}
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--code-bg); font-weight: 600; color: var(--text); }
tr:last-child td { border-bottom: none; }

/* ---------- Blockquote (used for the not-a-medical-device disclaimer) ---------- */
blockquote {
  background: var(--warn-bg); border-left: 4px solid var(--warn-bd);
  padding: 14px 18px; margin: 1.2em 0; border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text);
}
blockquote p { margin: 0; }
blockquote strong { color: var(--primary-dk); }

/* ---------- Cards (used on landing page) ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; margin: 1.5em 0; }
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 22px;
  box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.card h3 { margin-top: 0; color: var(--primary-dk); }
.card a { display: inline-block; margin-top: .5em; font-weight: 600; }

/* ---------- Effective-date stamp ---------- */
.meta {
  background: var(--code-bg); padding: 10px 14px; border-radius: var(--radius);
  font-size: .9rem; color: var(--text-light); margin-bottom: 1.5em;
  border: 1px solid var(--border);
}
.meta strong { color: var(--text); }

/* ---------- Footer ---------- */
.site-footer {
  margin-left: var(--nav-width); padding: 24px 48px;
  border-top: 1px solid var(--border); background: var(--bg-card);
  color: var(--text-light); font-size: .875rem;
}

/* ---------- Mobile ---------- */
@media (max-width: 820px) {
  .hamburger { display: block; }
  .sidebar { transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
  .main, .site-footer { margin-left: 0; padding: 24px 20px 60px; }
  table { font-size: .9rem; }
  th, td { padding: 10px 12px; }
}