/* ===========================================================================
   Kitabuni — Design System
   Wazo: "kitabu" (elimu) linalokutana na maisha halisi ya kibiashara ya
   Afrika Mashariki. Jua linalochomoza (matumaini/maendeleo), usiku wa
   indigo (uzito wa maarifa), kijani cha fedha/ukuaji.
   =========================================================================== */

:root {
  /* --- Rangi msingi --- */
  --ink: #14213D;         /* indigo ya usiku - vichwa vya habari, maandishi makuu */
  --ink-soft: #2A3B5F;
  --gold: #E3A33F;        /* dhahabu ya jua - CTA kuu, alama muhimu */
  --gold-deep: #C6842A;
  --teal: #2F7B6B;        /* kijani cha ukuaji/fedha - mafanikio, malipo */
  --teal-soft: #E3F0EC;
  --paper: #F5EFE0;       /* karatasi ya mchanga - background kuu */
  --paper-raised: #FFFFFF;
  --line: #E4D9C0;
  --text: #241C10;
  --text-muted: #6B6152;
  --error: #B3402A;

  /* --- Fonti --- */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* --- Mpangilio --- */
  --radius: 6px;
  --shadow-card: 0 1px 2px rgba(36, 28, 16, 0.06), 0 4px 16px rgba(36, 28, 16, 0.05);
  --max-width: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #F5EFE0;
    --paper: #14213D;
    --paper-raised: #1C2C4D;
    --text: #F0EAD9;
    --text-muted: #AAB4CC;
    --line: #33456B;
    --teal-soft: #1E3B35;
  }
}
:root[data-theme="dark"] {
  --ink: #F5EFE0;
  --paper: #14213D;
  --paper-raised: #1C2C4D;
  --text: #F0EAD9;
  --text-muted: #AAB4CC;
  --line: #33456B;
  --teal-soft: #1E3B35;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .display {
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3.4rem); font-weight: 500; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }

p { max-width: 62ch; color: var(--text); }
p.lede { font-size: 1.15rem; color: var(--text-muted); max-width: 52ch; }

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Site header --- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
}
.site-header .logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink);
  flex-shrink: 0;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.site-header nav::-webkit-scrollbar { display: none; }
.site-header nav a {
  color: var(--text);
  padding: 6px 10px;
  font-size: 0.92rem;
  white-space: nowrap;
  border-radius: var(--radius);
}
.site-header nav a:hover:not(.btn) { background: var(--teal-soft); text-decoration: none; }
.site-header nav a.btn { margin-left: 6px; }
@media (max-width: 640px) {
  .site-header { padding: 12px 16px; }
  .site-header nav { mask-image: linear-gradient(to right, #000 88%, transparent); }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-gold { background: var(--gold); color: var(--ink); }
.btn-gold:hover { background: var(--gold-deep); }
.btn-outline { background: transparent; border-color: var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--paper); }
.btn-teal { background: var(--teal); color: #fff; }

/* --- Cards --- */
.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}

/* --- Forms --- */
.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}
.form-field input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-raised);
  color: var(--text);
  font-size: 1rem;
  font-family: var(--font-body);
}
.form-field input:focus {
  outline: 2px solid var(--teal);
  outline-offset: 1px;
}
.form-error {
  background: #FBEAE5;
  color: var(--error);
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 18px;
}
.form-info {
  background: var(--teal-soft);
  color: var(--teal);
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 18px;
}

/* --- Hero --- */
.hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 780px) {
  .hero-grid { grid-template-columns: 1fr; }
}

/* --- Sura (course chapter) list --- */
.sura-list { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
.sura-item {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
}
.sura-item .namba {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--gold-deep);
  min-width: 2.2ch;
}
.sura-item .jina { font-weight: 600; color: var(--ink); }
.sura-item .hali { margin-left: auto; font-size: 0.85rem; color: var(--text-muted); }

.kundi-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--teal);
  background: var(--teal-soft);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.kundi-tag--gold {
  color: var(--gold-deep);
  background: rgba(227, 163, 63, 0.16);
}

/* --- Njia Mbili (homepage: two real audiences, two real doors) --- */
.njia-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 780px) {
  .njia-grid { grid-template-columns: 1fr; }
}
.njia-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-top: 4px solid var(--accent, var(--gold-deep));
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}
.njia-card--gold { --accent: var(--gold-deep); }
.njia-card--teal { --accent: var(--teal); }
.njia-card .njia-bei {
  font-family: var(--font-display);
  color: var(--ink);
  margin: 6px 0 22px;
  font-size: 0.98rem;
}
.njia-card .njia-bei strong { font-size: 1.3rem; font-weight: 600; }
.njia-card .btn { margin-top: auto; align-self: flex-start; }

.bundle-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--text-muted);
}
.bundle-strip strong { color: var(--ink); font-weight: 600; }

.saraka-teaser {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  background: var(--teal-soft);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-top: 16px;
}

/* --- Somo content --- */
.somo-maudhui { white-space: pre-wrap; font-size: 1.05rem; line-height: 1.7; }
.somo-nav { display: flex; justify-content: space-between; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }

footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.social-links { display: flex; gap: 18px; }
.social-links a { color: var(--text-muted); }
.social-links a:hover { color: var(--ink); }
.footer-links a { color: var(--text-muted); }
.footer-links a:hover { color: var(--ink); }