/* چای‌خونه: رنگ‌ها از design/ui/STYLE_GUIDE.md */
@font-face { font-family: Vazirmatn; src: url(/fonts/Vazirmatn-Regular.ttf) format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: Vazirmatn; src: url(/fonts/Vazirmatn-Bold.ttf) format("truetype"); font-weight: 700; font-display: swap; }
:root {
  --bg: #FBF3E4; --card: #F3E3C7; --ink: #2B1A12; --ink2: #5E4636;
  --primary: #A61E2D; --primary-dark: #7D1420; --teal: #0F7470; --amber: #D9822B;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: Vazirmatn, Tahoma, sans-serif; background: var(--bg); color: var(--ink);
  line-height: 1.8; min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 24px 16px;
}
main { width: 100%; max-width: 420px; text-align: center; }
.logo { font-size: 56px; line-height: 1; margin-bottom: 8px; }
h1 { font-size: 28px; margin: 0 0 4px; }
p { color: var(--ink2); margin: 0 0 16px; }
.card { background: var(--card); border-radius: 16px; padding: 20px 16px; margin: 20px 0; }
.code { font-size: 32px; font-weight: 700; letter-spacing: 4px; direction: ltr; color: var(--primary); font-family: ui-monospace, Menlo, monospace; }
.btn {
  display: block; width: 100%; padding: 14px 16px; margin: 12px 0 0; border-radius: 12px; border: 0;
  font: 700 18px Vazirmatn, Tahoma, sans-serif; text-decoration: none; cursor: pointer;
  background: var(--primary); color: #fff; box-shadow: 0 4px 0 var(--primary-dark);
}
.btn:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--primary-dark); }
.btn.secondary { background: var(--teal); box-shadow: 0 4px 0 #0a4f4c; }
.btn.ghost { background: transparent; color: var(--ink2); box-shadow: none; font-weight: 400; font-size: 15px; }
.note { font-size: 14px; }
footer { margin-top: 24px; font-size: 13px; color: var(--ink2); }