/* ==================================================================
   The 70 g Protein Cookbook — REDESIGN layer
   Loads AFTER css/styles.css and overrides it. A premium, editorial
   elevation: a selling hero, conversion CTAs, refined recipe cards,
   a chef/trust band, and display typography. Every base DOM hook
   (.tab-btn, #recipe-grid, .card, etc.) is preserved.
   ================================================================== */

:root {
  --bg: #faf8f3;                 /* warmer cream than the cool base */
  --ink: #1c241f;
  --muted: #6c756c;
  --line: #e8e3d7;
  --brand: #2f7d52;
  --brand-dark: #1d4e34;
  --brand-deep: #143527;         /* hero overlay + chef band base */
  --gold: #e0b13a;
  --gold-soft: #f1dca6;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(20,40,28,.05), 0 10px 28px rgba(20,40,28,.07);
  --shadow-lg: 0 20px 52px rgba(20,40,28,.18);
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
}

body { background: var(--bg); }

/* ---------- display typography ---------- */
.logo, h2, .chef-title, .plan-card-head h3, .science-section h3 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  letter-spacing: -.01em;
}
h2 { font-weight: 600; font-size: clamp(1.4rem, 1.1rem + 1.2vw, 1.85rem); }

/* ==================== HERO ==================== */
.site-header {
  display: flex; align-items: center;
  min-height: clamp(440px, 62vh, 580px);
  padding: 0;
  background:
    linear-gradient(180deg, rgba(13,33,24,.58) 0%, rgba(13,33,24,.50) 45%, rgba(13,33,24,.90) 100%),
    url("../img/book/hero.jpg");
  background-size: cover;
  background-position: center 42%;
}
#header-art-mount { display: none; }            /* drop the SVG band; let the photo carry the hero */
.site-header .header-content {
  position: relative; z-index: 1;
  max-width: 760px;
  padding-top: calc(56px + env(safe-area-inset-top));
  padding-bottom: 56px;
  text-align: left;
}
.hero-kicker {
  margin: 0 0 14px; font-size: .78rem; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase; color: var(--gold-soft);
}
.site-header .logo {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2.5rem, 1.5rem + 4.6vw, 4.2rem);
  line-height: 1.02; letter-spacing: -.02em; margin: 0;
  text-shadow: 0 2px 34px rgba(0,0,0,.28);
}
.site-header .logo .accent { color: var(--gold); font-style: italic; }
.site-header .tagline {
  margin: 18px 0 0; max-width: 42ch;
  font-size: clamp(1rem, .9rem + .45vw, 1.22rem); line-height: 1.5;
  opacity: .95; font-weight: 400;
}
.hero-stats {
  list-style: none; display: flex; flex-wrap: wrap; gap: 14px 30px;
  margin: 28px 0 0; padding: 0;
}
.hero-stats li { display: flex; flex-direction: column; line-height: 1.05; }
.hero-stats b { font-family: var(--font-display); font-size: 1.55rem; font-weight: 600; color: #fff; }
.hero-stats small { margin-top: 3px; font-size: .7rem; letter-spacing: .07em; text-transform: uppercase; opacity: .82; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

/* ---------- CTA buttons (shared) ---------- */
.btn-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font); font-weight: 700; font-size: .98rem; line-height: 1;
  padding: 15px 24px; border-radius: 999px; text-decoration: none; cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-cta:active { transform: translateY(1px); }
.btn-cta-primary { background: var(--gold); color: #2a3119; box-shadow: 0 10px 26px rgba(224,177,58,.36); }
.btn-cta-primary:hover { background: #ecc056; transform: translateY(-2px); }
.btn-cta-ghost { background: rgba(255,255,255,.10); color: #fff; border-color: rgba(255,255,255,.55); }
.btn-cta-ghost:hover { background: rgba(255,255,255,.18); transform: translateY(-2px); }

/* ==================== STICKY NAV + ALWAYS-ON BUY ==================== */
.tabs-bar { display: flex; align-items: center; gap: 10px; }
.tabs-bar .tabs-inner { flex: 1 1 auto; min-width: 0; }
.nav-buy {
  flex: 0 0 auto; display: inline-flex; align-items: center; gap: 6px;
  background: var(--brand); color: #fff; font-weight: 700; font-size: .85rem;
  padding: 9px 16px; border-radius: 999px; text-decoration: none; white-space: nowrap;
  box-shadow: 0 6px 16px rgba(47,125,82,.30); transition: background .15s, transform .15s;
}
.nav-buy:hover { background: var(--brand-dark); transform: translateY(-1px); }
.nav-buy .nav-buy-short { display: none; }

/* ==================== RECIPE CARDS ==================== */
.card {
  border-radius: var(--radius);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card-hero { height: 172px; }
.card-title { font-size: 1.12rem; font-weight: 700; letter-spacing: -.005em; }
.macro-protein { background: #e2f1e8; color: var(--brand-dark); }
@media (hover: hover) {
  .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #cfe0d4; }
}

/* ==================== CHEF / TRUST BAND ==================== */
.chef-band { background: var(--brand-deep); color: #eef0e6; margin-top: 10px; }
.chef-band-inner { display: flex; gap: 30px; align-items: center; padding: 52px 0; }
.chef-crest {
  flex: 0 0 auto; width: 98px; height: 98px; border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #2f7d52, #143527);
  border: 2px solid var(--gold); color: var(--gold-soft);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 2rem; font-weight: 600; letter-spacing: .02em;
}
.chef-title { color: #fff; margin: 0 0 12px; }
.chef-band p { margin: 0 0 20px; max-width: 60ch; opacity: .92; line-height: 1.62; }
.chef-cta { display: flex; flex-wrap: wrap; gap: 12px; }

/* ==================== FOOTER ==================== */
.site-footer { text-align: center; padding: 30px 0; }
.footer-links { margin: 0 0 8px; font-weight: 600; }
.footer-links a { color: var(--brand); text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }

/* ==================== MOBILE ==================== */
@media (max-width: 640px) {
  .site-header { min-height: clamp(420px, 78vh, 560px); }
  .site-header .header-content { padding-top: calc(34px + env(safe-area-inset-top)); padding-bottom: 40px; }
  .hero-stats { gap: 12px 22px; }
  .hero-stats b { font-size: 1.3rem; }
  .hero-cta .btn-cta { flex: 1 1 100%; }
  .nav-buy { padding: 8px 13px; }
  .nav-buy .nav-buy-full { display: none; }
  .nav-buy .nav-buy-short { display: inline; }
  .card-hero { height: 200px; }
  .chef-band-inner { flex-direction: column; text-align: center; gap: 20px; padding: 40px 0; }
  .chef-band p { margin-left: auto; margin-right: auto; }
  .chef-cta { justify-content: center; }
  .chef-cta .btn-cta { flex: 1 1 100%; }
}