/* ============================================
   SCHLEGEL VENTURES - Premium Gemstone Investment
   Dark Luxury Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700;900&family=Inter:wght@300;400;500;600&display=swap');

/* ---- CSS Variables ---- */
:root {
  --navy: #0D1B2A;
  --navy-mid: #1B2A4A;
  --navy-light: #243355;
  --gold: #C9A84C;
  --gold-light: #E2C47A;
  --gold-dark: #9E7A2A;
  --white: #F8F5EE;
  --white-dim: rgba(248,245,238,0.75);
  --white-faint: rgba(248,245,238,0.1);
  --border: rgba(201,168,76,0.2);
  --border-strong: rgba(201,168,76,0.5);
  --card-bg: rgba(27,42,74,0.6);
  --shadow: 0 4px 32px rgba(0,0,0,0.4);
  --shadow-gold: 0 4px 24px rgba(201,168,76,0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
  --transition: 0.25s ease;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--navy);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--white);
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); font-weight: 700; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }

p { color: var(--white-dim); margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--gold); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--gold-light); }

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

ul { list-style: none; }

/* ---- Gold Accent ---- */
.gold { color: var(--gold); }
.gold-line {
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  margin: 1rem auto;
  border-radius: 2px;
}
.gold-line-left { margin-left: 0; }

/* ---- Container ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.container-sm { max-width: 800px; margin: 0 auto; padding: 0 1.5rem; }

/* ============================================
   HEADER / NAV
   ============================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  padding: 1rem 0;
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(13,27,42,0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
  backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}
.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-icon svg { width: 22px; height: 22px; fill: var(--navy); }
.logo-text {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.03em;
}
.logo-text span { color: var(--gold); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  color: var(--white-dim);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); }

.nav-cta {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--navy) !important;
  font-weight: 600 !important;
  padding: 0.55rem 1.4rem;
  border-radius: 6px;
  transition: opacity var(--transition) !important;
}
.nav-cta:hover { opacity: 0.88; color: var(--navy) !important; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--navy);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: var(--shadow-gold); color: var(--navy); }
.btn-outline {
  background: transparent;
  color: var(--gold);
  border: 1.5px solid var(--gold);
}
.btn-outline:hover { background: var(--gold); color: var(--navy); }
.btn-lg { padding: 1rem 2.5rem; font-size: 1rem; }
.btn-sm { padding: 0.5rem 1.2rem; font-size: 0.85rem; }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.3);
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,27,42,0.9) 40%, rgba(27,42,74,0.6) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(201,168,76,0.15);
  border: 1px solid var(--border-strong);
  color: var(--gold);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}
.hero-title { margin-bottom: 1.5rem; }
.hero-title .highlight {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc { font-size: 1.1rem; color: var(--white-dim); margin-bottom: 2.5rem; max-width: 560px; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}
.stat-item {}
.stat-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  display: block;
}
.stat-label { font-size: 0.8rem; color: var(--white-dim); letter-spacing: 0.05em; text-transform: uppercase; }

/* ============================================
   SECTIONS
   ============================================ */
section { padding: 6rem 0; }
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}
.section-title { margin-bottom: 1.5rem; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-header .section-title { margin-bottom: 1rem; }
.section-header p { max-width: 600px; margin: 0 auto; }

/* ---- Divider ---- */
.divider {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ============================================
   PIERRE CARDS (Grid)
   ============================================ */
.pierres-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pierre-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  backdrop-filter: blur(8px);
}
.pierre-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-gold);
  border-color: var(--border-strong);
}
.pierre-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.pierre-card-body { padding: 1.5rem; }
.pierre-card-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}
.pierre-card-title { font-size: 1.3rem; margin-bottom: 0.5rem; }
.pierre-card-desc { font-size: 0.9rem; color: var(--white-dim); margin-bottom: 1rem; }
.pierre-card-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}
.pierre-meta-item {
  display: flex;
  flex-direction: column;
}
.pierre-meta-label { font-size: 0.7rem; color: var(--gold); text-transform: uppercase; letter-spacing: 0.08em; }
.pierre-meta-value { font-size: 0.95rem; font-weight: 600; }

/* ============================================
   WHY SECTION
   ============================================ */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.why-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  transition: border-color var(--transition);
}
.why-card:hover { border-color: var(--border-strong); }
.why-icon {
  width: 64px; height: 64px;
  background: rgba(201,168,76,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}
.why-icon svg { width: 28px; height: 28px; color: var(--gold); stroke: var(--gold); }
.why-title { font-size: 1.1rem; margin-bottom: 0.75rem; }
.why-desc { font-size: 0.9rem; color: var(--white-dim); }

/* ============================================
   SIMULATOR
   ============================================ */
.simulator-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  backdrop-filter: blur(8px);
}
.simulator-wrap h3 { margin-bottom: 0.5rem; }
.simulator-wrap > p { margin-bottom: 2rem; }

.sim-fields {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.sim-field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.sim-field input,
.sim-field select {
  width: 100%;
  background: rgba(13,27,42,0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  -webkit-appearance: none;
}
.sim-field input:focus,
.sim-field select:focus {
  outline: none;
  border-color: var(--gold);
}

.sim-result {
  background: linear-gradient(135deg, rgba(201,168,76,0.1), rgba(201,168,76,0.05));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 1.5rem 2rem;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  align-items: center;
}
.sim-result-item { flex: 1; min-width: 140px; }
.sim-result-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gold); display: block; margin-bottom: 0.3rem; }
.sim-result-val { font-family: var(--font-heading); font-size: 1.8rem; font-weight: 700; color: var(--white); }
.sim-result-val.positive { color: #5FE0A0; }

/* ============================================
   PIERRE DETAIL PAGE
   ============================================ */
.pierre-hero {
  padding: 8rem 0 4rem;
  position: relative;
  overflow: hidden;
}
.pierre-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.25);
  z-index: 0;
}
.pierre-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,27,42,0.98) 50%, transparent);
  z-index: 1;
}
.pierre-hero-content { position: relative; z-index: 2; max-width: 600px; }

.pierre-detail-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 3rem;
  align-items: start;
}
.pierre-img-main {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  object-fit: cover;
  height: 420px;
}

.specs-table { width: 100%; border-collapse: collapse; }
.specs-table tr { border-bottom: 1px solid var(--border); }
.specs-table tr:last-child { border-bottom: none; }
.specs-table td { padding: 0.75rem 0.5rem; font-size: 0.9rem; }
.specs-table td:first-child { color: var(--gold); font-weight: 600; width: 45%; }
.specs-table td:last-child { color: var(--white-dim); }

.related-pierres { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1.5rem; }
.related-pierre-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  color: var(--white-dim);
  transition: all var(--transition);
}
.related-pierre-chip:hover { border-color: var(--gold); color: var(--gold); }

/* ============================================
   STICKY FOOTER
   ============================================ */
.sticky-footer-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 800;
  background: linear-gradient(90deg, var(--navy-mid), var(--navy-light));
  border-top: 1px solid var(--border-strong);
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transform: translateY(100%);
  transition: transform 0.4s ease;
  backdrop-filter: blur(10px);
}
.sticky-footer-cta.visible { transform: translateY(0); }
.sticky-footer-text {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}
.sticky-footer-text .dot {
  width: 10px; height: 10px;
  background: #5FE0A0;
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}
.sticky-footer-text p { font-size: 0.9rem; color: var(--white-dim); margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sticky-footer-text strong { color: var(--white); }
.sticky-footer-close {
  background: none;
  border: none;
  color: var(--white-dim);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* ============================================
   EXIT POPUP
   ============================================ */
.exit-popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.exit-popup-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.exit-popup {
  background: linear-gradient(135deg, var(--navy-mid), var(--navy));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 2.5rem;
  max-width: 520px;
  width: 100%;
  position: relative;
  transform: scale(0.9);
  transition: transform 0.3s ease;
  box-shadow: 0 20px 60px rgba(0,0,0,0.7);
}
.exit-popup-overlay.active .exit-popup { transform: scale(1); }
.exit-popup-close {
  position: absolute;
  top: 1rem; right: 1rem;
  background: none;
  border: none;
  color: var(--white-dim);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}
.exit-popup-badge {
  display: inline-block;
  background: rgba(95,224,160,0.15);
  color: #5FE0A0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  margin-bottom: 1.2rem;
  border: 1px solid rgba(95,224,160,0.3);
}
.exit-popup h3 { font-size: 1.6rem; margin-bottom: 0.75rem; }
.exit-popup p { font-size: 0.95rem; color: var(--white-dim); margin-bottom: 1.5rem; }
.exit-popup-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ============================================
   CONTACT / FORM SECTION
   ============================================ */
.tally-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  overflow: hidden;
}

/* ============================================
   COMPARATIF TABLE
   ============================================ */
.comparatif-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.comparatif-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}
.comparatif-table thead tr {
  background: linear-gradient(90deg, var(--navy-mid), var(--navy-light));
  border-bottom: 2px solid var(--gold);
}
.comparatif-table th {
  padding: 1.2rem 1.5rem;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--white);
}
.comparatif-table th:first-child { color: var(--white-dim); }
.comparatif-table th.highlight-col { color: var(--gold); }
.comparatif-table td {
  padding: 1rem 1.5rem;
  font-size: 0.9rem;
  color: var(--white-dim);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.comparatif-table tr:last-child td { border-bottom: none; }
.comparatif-table tbody tr:hover td { background: rgba(201,168,76,0.04); }
.comparatif-table .highlight-col { background: rgba(201,168,76,0.06); }
.check { color: #5FE0A0; font-size: 1.1rem; }
.cross { color: #E26060; font-size: 1.1rem; }
.partial { color: var(--gold); font-size: 1.1rem; }

/* ============================================
   FAQ
   ============================================ */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 0;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  background: none;
  border: none;
  padding: 1.5rem 0;
  cursor: pointer;
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
}
.faq-question span { flex: 1; }
.faq-icon {
  width: 24px; height: 24px;
  flex-shrink: 0;
  stroke: var(--gold);
  transition: transform var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer p { padding-bottom: 1.5rem; font-size: 0.95rem; }

/* ============================================
   BREADCRUMB
   ============================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--white-dim);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--white-dim); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb .sep { color: var(--gold); }

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--navy-mid);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
  margin-bottom: 56px; /* space for sticky footer */
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand p { font-size: 0.9rem; margin-top: 1rem; margin-bottom: 1.5rem; }
.footer-heading {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
}
.footer-links { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links a { color: var(--white-dim); font-size: 0.9rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p { font-size: 0.8rem; margin: 0; }
.footer-legal { display: flex; gap: 1.5rem; }
.footer-legal a { font-size: 0.8rem; color: var(--white-dim); }

/* ============================================
   REVEAL ON SCROLL
   ============================================ */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   TRUST BADGES
   ============================================ */
.trust-bar {
  background: var(--navy-mid);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}
.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--white-dim);
  font-weight: 500;
}
.trust-item svg { width: 16px; height: 16px; stroke: var(--gold); }

/* ============================================
   LISTING PAGE
   ============================================ */
.listing-hero {
  padding: 8rem 0 4rem;
  background: linear-gradient(135deg, var(--navy-mid) 0%, var(--navy) 100%);
  border-bottom: 1px solid var(--border);
}

/* ============================================
   MOBILE NAV
   ============================================ */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(13,27,42,0.98);
  z-index: 950;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}
.mobile-nav.active { display: flex; }
.mobile-nav a {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--white);
  transition: color var(--transition);
}
.mobile-nav a:hover { color: var(--gold); }
.mobile-nav-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  background: none;
  border: none;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .pierres-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .pierre-detail-grid { grid-template-columns: 1fr; }
  .sim-fields { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  section { padding: 4rem 0; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .pierres-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-stats { gap: 1.5rem; }
  .sim-fields { grid-template-columns: 1fr; }
  .sim-result { flex-direction: column; gap: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .trust-bar-inner { gap: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .sticky-footer-cta .btn { padding: 0.6rem 1.2rem; font-size: 0.85rem; }
  h1 { font-size: 2rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 1rem; }
  .exit-popup { padding: 2rem 1.5rem; }
}