/* ============================================================
 * CharmFoods Brand System — canonical source of truth
 * ============================================================
 * Bộ nhận diện thương hiệu thống nhất cho toàn bộ landing pages.
 *
 * Dùng ở trang mới:
 *   <link rel="stylesheet" href="/assets/brand/brand.css" />
 *   <script src="/assets/brand/brand-tailwind.js"></script>
 *
 * Màu lấy từ logo chính thức: Gold ring + Forest arrow on Cream.
 * Last updated: 2026-04-15 · Bé Tuệ
 * ============================================================ */

:root {
  /* ── Forest (primary) ── */
  --cf-forest-950: #0A1F14;
  --cf-forest-900: #122B1C;
  --cf-forest-800: #1B4332;   /* ← màu chính: heading, nút CTA, viền */
  --cf-forest-700: #2D6A4F;
  --cf-forest-600: #40916C;
  --cf-forest-500: #52B788;
  --cf-forest-400: #74C69D;
  --cf-forest-50:  #F0FAF3;

  /* ── Gold (accent) ── */
  --cf-gold-800: #8B6914;
  --cf-gold-600: #C9A227;     /* ← màu phụ: highlight, icon, divider */
  --cf-gold-500: #D4AE3A;
  --cf-gold-400: #E8C87A;
  --cf-gold-200: #FAF0CC;
  --cf-gold-100: #FDF8E8;

  /* ── Rose (CTA / alert) ── */
  --cf-rose-700: #BE123C;
  --cf-rose-600: #E11D48;
  --cf-rose-200: #FECDD3;
  --cf-rose-100: #FFE4E6;

  /* ── Neutrals ── */
  --cf-cream:     #FAF7F2;    /* ← background chủ đạo */
  --cf-cream-2:   #F4EFE3;
  --cf-ink:       #1C1C1C;    /* ← body text */
  --cf-ink-soft:  #2D2418;
  --cf-line:      #E8E0D0;

  /* ── Typography ── */
  --cf-font-sans:  'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --cf-font-serif: 'Lora', Georgia, serif;

  /* ── Radius & shadow ── */
  --cf-radius-sm: 8px;
  --cf-radius-md: 14px;
  --cf-radius-lg: 20px;
  --cf-shadow-card:  0 2px 16px rgba(27,67,50,0.06);
  --cf-shadow-hover: 0 8px 40px rgba(27,67,50,0.12);
  --cf-shadow-btn:   0 8px 32px rgba(27,67,50,0.35);
  --cf-shadow-gold:  0 8px 32px rgba(201,162,39,0.40);
}

/* ── Base ── */
html { scroll-behavior: smooth; }
body {
  background-color: var(--cf-cream);
  color: var(--cf-ink);
  font-family: var(--cf-font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Gradient text helpers ── */
.cf-text-gold-grad {
  background: linear-gradient(135deg, #C9A227, #F4D98E, #8B6914);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.cf-text-forest-grad {
  background: linear-gradient(135deg, #1B4332, #40916C);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ── Cards ── */
.cf-card {
  background: #fff;
  border: 1px solid var(--cf-line);
  border-radius: var(--cf-radius-md);
  box-shadow: var(--cf-shadow-card);
  transition: all .3s ease;
}
.cf-card:hover {
  border-color: rgba(201,162,39,.4);
  box-shadow: var(--cf-shadow-hover);
  transform: translateY(-2px);
}

/* ── Buttons ── */
.cf-btn-forest {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: 14px 28px;
  border-radius: var(--cf-radius-sm);
  font-weight: 600;
  background: linear-gradient(135deg, #1B4332, #2D6A4F);
  color: var(--cf-cream);
  transition: all .25s ease;
  border: none;
  cursor: pointer;
  text-decoration: none;
}
.cf-btn-forest:hover {
  transform: translateY(-2px);
  box-shadow: var(--cf-shadow-btn);
}
.cf-btn-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: 14px 28px;
  border-radius: var(--cf-radius-sm);
  font-weight: 600;
  background: linear-gradient(135deg, #C9A227, #8B6914);
  color: var(--cf-cream);
  transition: all .25s ease;
  border: none;
  cursor: pointer;
  text-decoration: none;
}
.cf-btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: var(--cf-shadow-gold);
}
.cf-btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: 13px 27px;
  border-radius: var(--cf-radius-sm);
  font-weight: 600;
  background: transparent;
  color: var(--cf-forest-800);
  border: 2px solid var(--cf-forest-800);
  transition: all .25s ease;
  cursor: pointer;
  text-decoration: none;
}
.cf-btn-outline:hover {
  background: var(--cf-forest-800);
  color: var(--cf-cream);
}

/* ── Badges ── */
.cf-badge-forest {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(27,67,50,0.08);
  border: 1px solid rgba(27,67,50,0.2);
  color: var(--cf-forest-800);
}
.cf-badge-gold {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(201,162,39,0.1);
  border: 1px solid rgba(201,162,39,0.3);
  color: var(--cf-gold-800);
}

/* ── Hero bg ── */
.cf-hero-bg {
  background: linear-gradient(160deg, #1B4332 0%, #2D6A4F 60%, #122B1C 100%);
  color: var(--cf-cream);
}

/* ── Divider ── */
.cf-divider-gold {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cf-gold-600), transparent);
  margin: 2rem 0;
}

/* ── Promo announcement bar (top of page) ── */
.cf-promo-bar {
  background: linear-gradient(90deg, #1B4332, #2D6A4F, #1B4332);
  color: #F4D98E;
  text-align: center;
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  position: relative;
  z-index: 60;
}

/* ── Sticky nav baseline ── */
.cf-navbar {
  transition: background .3s, box-shadow .3s;
}
.cf-navbar.scrolled {
  background: rgba(250,247,242,0.96) !important;
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(27,67,50,0.1);
}

/* ── Float anim (for hero decorations) ── */
@keyframes cf-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}
.cf-float { animation: cf-float 5s ease-in-out infinite; }

/* ── Ticker (scrolling testimonials) ── */
@keyframes cf-ticker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.cf-ticker-track {
  display: flex;
  width: max-content;
  animation: cf-ticker 30s linear infinite;
}
.cf-ticker-track:hover { animation-play-state: paused; }

/* ── FAQ details/summary ── */
.cf-faq summary { cursor: pointer; list-style: none; }
.cf-faq summary::-webkit-details-marker { display: none; }
.cf-faq[open] .cf-faq-icon { transform: rotate(45deg); }
.cf-faq-icon { display: inline-block; transition: transform .2s; }