/* Design tokens — Islamic calm palette (UX-001) */
:root {
  --emerald-deep: #0f6b4c;
  --emerald: #15805d;
  --emerald-soft: #d8f0e5;
  --cream: #f7f3ea;
  --cream-dark: #ebe4d4;
  --white: #ffffff;
  --gold-soft: #c4a35a;
  --gold-light: #f3e7c7;
  --ink: #1c2a24;
  --ink-muted: #5a6b63;
  --arabic-ink: #0b3d2e;
  --danger: #b42318;
  --warning: #b54708;
  --shadow-soft: 0 10px 30px rgba(15, 107, 76, 0.08);
  --radius-lg: 1.25rem;
  --radius-md: 0.9rem;
  --nav-height: 4.25rem;
  --header-height: 3.5rem;
  --font-bn: 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
  --font-en: 'Source Sans 3', 'Segoe UI', sans-serif;
  --font-ar: 'Noto Naskh Arabic', 'Amiri', serif;
  --touch: 48px;
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-bn), var(--font-en);
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(196, 163, 90, 0.18), transparent 28%),
    radial-gradient(circle at 10% 20%, rgba(21, 128, 93, 0.12), transparent 32%),
    linear-gradient(180deg, #fbf8f1 0%, var(--cream) 45%, #f3eee3 100%);
  -webkit-font-smoothing: antialiased;
}

body.app-shell {
  padding-bottom: calc(var(--nav-height) + env(safe-area-inset-bottom));
}

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--emerald-deep);
}

p {
  color: var(--ink-muted);
  line-height: 1.65;
}

a {
  color: var(--emerald);
  text-decoration: none;
}

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

.text-ar {
  font-family: var(--font-ar);
  font-size: 1.45rem;
  line-height: 2;
  color: var(--arabic-ink);
  direction: rtl;
  text-align: right;
}

.text-en {
  font-family: var(--font-en);
}

.lang-mix-label {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.6rem;
  align-items: baseline;
}

.lang-mix-label .bn {
  font-weight: 700;
  color: var(--ink);
}

.lang-mix-label .en {
  font-family: var(--font-en);
  font-size: 0.92em;
  color: var(--ink-muted);
}

.btn-primary,
.btn-setu {
  --bs-btn-bg: var(--emerald-deep);
  --bs-btn-border-color: var(--emerald-deep);
  --bs-btn-hover-bg: var(--emerald);
  --bs-btn-hover-border-color: var(--emerald);
  --bs-btn-color: #fff;
  min-height: var(--touch);
  border-radius: 999px;
  font-weight: 600;
  padding-inline: 1.25rem;
  box-shadow: 0 8px 18px rgba(15, 107, 76, 0.22);
}

.btn-ghost {
  min-height: var(--touch);
  border-radius: 999px;
  border: 1px solid rgba(15, 107, 76, 0.2);
  background: rgba(255, 255, 255, 0.7);
  color: var(--emerald-deep);
  font-weight: 600;
}

.surface-card {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(15, 107, 76, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.badge-gold {
  background: var(--gold-light);
  color: #7a5b18;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.35rem 0.7rem;
}

.islamic-ornament {
  height: 10px;
  width: 72px;
  margin-inline: auto;
  background:
    linear-gradient(90deg, transparent, var(--gold-soft), transparent);
  position: relative;
  opacity: 0.85;
}

.islamic-ornament::before,
.islamic-ornament::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 8px;
  height: 8px;
  border: 1.5px solid var(--gold-soft);
  transform: translateY(-50%) rotate(45deg);
}

.islamic-ornament::before { left: 0; }
.islamic-ornament::after { right: 0; }

:focus-visible {
  outline: 3px solid rgba(196, 163, 90, 0.65);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}