/* Dentalingo site — palette lifted from the app's DesignSystem.swift */
:root {
  --teal:        #0DA699;
  --teal-dark:   #057A73;
  --teal-wash:   #E6F7F2;
  --success:     #26AD61;
  --streak:      #F58C24;
  --xp:          #F2B829;
  --heart:       #EB4D61;

  --bg:          #F7F8FA;
  --surface:     #FFFFFF;
  --border:      #E3E6EB;
  --text:        #14181D;
  --text-2:      #5B6672;
  --shadow:      0 1px 2px rgba(20,24,29,.05), 0 8px 24px rgba(20,24,29,.06);
  --radius:      16px;
  --maxw:        860px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --teal:      #17C2B2;
    --teal-dark: #0DA699;
    --teal-wash: #10312D;
    --bg:        #0E1114;
    --surface:   #171B20;
    --border:    #272D34;
    --text:      #EDF0F3;
    --text-2:    #9AA5B1;
    --shadow:    0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.3);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
.site-head {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: saturate(180%) blur(12px);
}
.site-head .wrap {
  display: flex; align-items: center; gap: 12px;
  min-height: 60px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; }
.brand img { width: 30px; height: 30px; border-radius: 7px; display: block; }
.site-nav { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
.site-nav a { color: var(--text-2); text-decoration: none; font-size: 15px; font-weight: 500; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--teal); }

/* ---------- hero ---------- */
.hero { padding: 56px 0 44px; text-align: center; }
.hero img.icon {
  width: 108px; height: 108px; border-radius: 24px;
  box-shadow: var(--shadow); display: block; margin: 0 auto 22px;
}
.hero h1 { font-size: clamp(30px, 6vw, 42px); line-height: 1.15; margin: 0 0 12px; letter-spacing: -.02em; }
.hero p.lede { font-size: clamp(17px, 3vw, 20px); color: var(--text-2); margin: 0 auto; max-width: 34em; }

.badge {
  display: inline-block; background: var(--teal-wash); color: var(--teal-dark);
  border-radius: 999px; padding: 5px 13px; font-size: 13px; font-weight: 700;
  letter-spacing: .01em; margin-bottom: 18px;
}
@media (prefers-color-scheme: dark) { .badge { color: var(--teal); } }

/* ---------- content ---------- */
main { padding: 8px 0 64px; }
h2 { font-size: 24px; letter-spacing: -.01em; margin: 44px 0 12px; }
h3 { font-size: 19px; margin: 30px 0 8px; }
p, li { color: var(--text); }
a { color: var(--teal-dark); }
@media (prefers-color-scheme: dark) { a { color: var(--teal); } }
ul, ol { padding-left: 22px; }
li { margin: 6px 0; }
hr { border: 0; border-top: 1px solid var(--border); margin: 40px 0; }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 24px; margin: 18px 0;
  box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; }
.card > :last-child { margin-bottom: 0; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); margin: 22px 0; }
.grid.stats { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.grid .card { margin: 0; }

.stat { text-align: center; }
.stat .n { display: block; font-size: 30px; font-weight: 800; color: var(--teal); line-height: 1.1; }
.stat .l { display: block; font-size: 14px; color: var(--text-2); margin-top: 4px; }

.btn {
  display: inline-block; background: var(--teal); color: #fff !important;
  text-decoration: none; font-weight: 700; padding: 13px 26px;
  border-radius: 12px; box-shadow: var(--shadow);
}
.btn:hover { background: var(--teal-dark); }
.btn.ghost { background: transparent; color: var(--teal-dark) !important; box-shadow: none; border: 1px solid var(--border); }
@media (prefers-color-scheme: dark) { .btn.ghost { color: var(--teal) !important; } }

.note {
  background: var(--teal-wash); border-left: 3px solid var(--teal);
  border-radius: 0 10px 10px 0; padding: 14px 18px; margin: 22px 0;
  font-size: 15.5px;
}
.note strong { color: var(--teal-dark); }
@media (prefers-color-scheme: dark) { .note strong { color: var(--teal); } }

.meta { color: var(--text-2); font-size: 14.5px; }

.mascot { display: block; margin: 0 auto; width: 150px; height: auto; }

/* ---------- tables ---------- */
.table-scroll { overflow-x: auto; margin: 18px 0; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; font-size: 15px; min-width: 480px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 700; color: var(--text-2); font-size: 13px; text-transform: uppercase; letter-spacing: .04em; }
tbody tr:last-child td { border-bottom: 0; }

/* ---------- footer ---------- */
.site-foot {
  border-top: 1px solid var(--border); background: var(--surface);
  padding: 28px 0 40px; font-size: 14.5px; color: var(--text-2);
}
.site-foot .links { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 14px; }
.site-foot a { color: var(--text-2); text-decoration: none; }
.site-foot a:hover { color: var(--teal); }
.site-foot .legal { font-size: 13px; line-height: 1.6; }

.toc { font-size: 15.5px; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

@media (max-width: 560px) {
  .hero { padding: 40px 0 32px; }
  .card { padding: 18px; }
}