/* ============================================
   KDP Ads Optimizer — styles.css
   Palette : fond #0B0F14 | accent #F59E0B
   Pas de violet, pas de dépendance externe
   ============================================ */

/* --- Variables --- */
:root {
  --bg:          #0B0F14;
  --bg-card:     #131920;
  --bg-card-2:   #1A2230;
  --border:      rgba(255,255,255,0.07);
  --accent:      #F59E0B;
  --accent-hover:#D97706;
  --accent-dim:  rgba(245,158,11,0.12);
  --text:        #F1F5F9;
  --text-muted:  #8B97A8;
  --text-light:  #CBD5E1;
  --success:     #10B981;
  --danger:      #EF4444;
  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 4px 24px rgba(0,0,0,0.4);
  --shadow-sm:   0 2px 10px rgba(0,0,0,0.25);
  --font:        system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-w:       1140px;
  --transition:  0.2s ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
ul { list-style: none; }

/* --- Layout --- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section--tight { padding: 64px 0; }

/* --- Typography --- */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.2rem; }
.section-label {
  display: inline-block;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title { margin-bottom: 16px; }
.section-subtitle {
  color: var(--text-light);
  font-size: 1.1rem;
  max-width: 580px;
}
.text-center { text-align: center; }
.text-center .section-subtitle { margin: 0 auto; }
.text-accent { color: var(--accent); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--accent);
  color: #000;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #000;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(245,158,11,0.35);
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.04);
  color: var(--text);
}
.btn-outline-accent {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline-accent:hover {
  background: var(--accent);
  color: #000;
}
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.card:hover {
  border-color: rgba(245,158,11,0.2);
  box-shadow: var(--shadow);
}
.card-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 0.95rem; }

/* --- Badge --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.badge-accent { background: var(--accent-dim); color: var(--accent); }
.badge-popular { background: var(--accent); color: #000; }

/* --- Grids --- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

/* ============================================
   HEADER / NAV
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,15,20,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 8px; }
.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-right: 16px;
}
.nav__links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav__links a:hover {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}
.nav__cta { display: flex; align-items: center; gap: 10px; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
}
.hamburger:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.25s ease;
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
  z-index: 99;
  flex-direction: column;
  gap: 8px;
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  color: var(--text);
  font-size: 1rem;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu .mobile-cta { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.mobile-menu .mobile-cta .btn { justify-content: center; }

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(245,158,11,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero__label { margin-bottom: 16px; }
.hero h1 { max-width: 800px; margin: 0 auto 20px; }
.hero__sub {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 36px;
}
.hero__cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }
.hero__proof {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}
.proof-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 8px 16px;
  font-size: 0.85rem;
  color: var(--text-light);
}
.proof-item .dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============================================
   HOW IT WORKS
   ============================================ */
.steps { counter-reset: step; }
.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 56px; }
.step {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  position: relative;
}
.step::after {
  content: '';
  position: absolute;
  top: 20px;
  right: -16px;
  width: 32px;
  height: 1px;
  background: var(--border);
}
.step:last-child::after { display: none; }
.step__num {
  width: 40px; height: 40px;
  background: var(--accent-dim);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 20px;
  flex-shrink: 0;
}
.step h3 { margin-bottom: 10px; font-size: 1.05rem; }
.step p { color: var(--text-muted); font-size: 0.9rem; }

/* ============================================
   FEATURES
   ============================================ */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }

/* ============================================
   PRICING
   ============================================ */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow);
  position: relative;
}
.pricing-card:hover {
  border-color: rgba(245,158,11,0.35);
  box-shadow: var(--shadow);
}
.pricing-card.featured:hover { box-shadow: 0 0 0 1px var(--accent), 0 8px 32px rgba(0,0,0,0.5); }
.pricing-card__header { margin-bottom: 28px; }
.pricing-card__header .badge { margin-bottom: 12px; }
.pricing-card__name { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.pricing-card__desc { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 20px; }
.pricing-card__price { display: flex; align-items: baseline; gap: 4px; }
.price-amount { font-size: 2.4rem; font-weight: 800; color: var(--text); }
.price-period { font-size: 0.85rem; color: var(--text-muted); }
.price-note { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }
.pricing-card__features { flex: 1; margin-bottom: 28px; }
.pricing-card__features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 7px 0;
  font-size: 0.9rem;
  color: var(--text-light);
  border-bottom: 1px solid var(--border);
}
.pricing-card__features li:last-child { border-bottom: none; }
.pricing-card__features li .check { color: var(--success); flex-shrink: 0; margin-top: 2px; }
.pricing-card__features li .cross { color: var(--text-muted); flex-shrink: 0; margin-top: 2px; }
.pricing-cta { margin-top: auto; }

/* Comparison table */
.compare-wrap { overflow-x: auto; margin-top: 64px; }
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.compare-table th, .compare-table td {
  padding: 12px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.compare-table thead th {
  background: var(--bg-card-2);
  font-weight: 700;
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.compare-table thead th:first-child { color: var(--text); }
.compare-table tbody tr:hover td { background: rgba(255,255,255,0.02); }
.compare-table td { color: var(--text-light); }
.compare-table td:first-child { color: var(--text); font-weight: 500; }
.compare-table .t-check { color: var(--success); font-size: 1rem; }
.compare-table .t-cross { color: var(--text-muted); font-size: 1rem; }
.compare-table .t-partial { color: var(--accent); font-size: 0.75rem; font-weight: 600; }
.compare-table thead th.col-featured { color: var(--accent); }
.compare-table td.col-featured { background: rgba(245,158,11,0.04); }

/* Pricing footer note */
.pricing-note {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.pricing-note span { display: flex; align-items: center; gap: 6px; }

/* ============================================
   FAQ
   ============================================ */
.faq-list { max-width: 760px; margin: 56px auto 0; }
.faq-item {
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 4px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.975rem;
  font-weight: 600;
  text-align: left;
  gap: 16px;
}
.faq-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.faq-btn .chevron {
  flex-shrink: 0;
  color: var(--accent);
  transition: transform 0.25s ease;
  font-size: 1.1rem;
  line-height: 1;
}
.faq-item.is-open .faq-btn .chevron { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.25s ease;
}
.faq-answer p, .faq-answer ul {
  padding: 0 4px 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}
.faq-answer ul { padding-left: 20px; list-style: disc; }
.faq-answer ul li { margin-bottom: 4px; }

/* ============================================
   CONTACT
   ============================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; margin-top: 48px; }
.contact-info h3 { margin-bottom: 12px; }
.contact-info p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 20px; }
.contact-email a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-size: 0.95rem;
  color: var(--text);
  transition: border-color var(--transition);
}
.contact-email a:hover { border-color: rgba(245,158,11,0.3); color: var(--text); }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 500;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color var(--transition);
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea { min-height: 110px; }
.form-note { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 14px; font-style: italic; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer__brand .logo { font-size: 1rem; margin-bottom: 12px; }
.footer__brand p { font-size: 0.85rem; color: var(--text-muted); max-width: 260px; line-height: 1.6; }
.footer__col h4 { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 14px; }
.footer__col ul li { margin-bottom: 8px; }
.footer__col ul li a { color: var(--text-light); font-size: 0.875rem; transition: color var(--transition); }
.footer__col ul li a:hover { color: var(--accent); }
.footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: flex-start;
}
.footer__legal { font-size: 0.78rem; color: var(--text-muted); line-height: 1.8; }
.footer__legal span { display: block; }
.footer__links { display: flex; gap: 20px; flex-shrink: 0; }
.footer__links a { font-size: 0.85rem; color: var(--text-muted); }
.footer__links a:hover { color: var(--accent); }

/* ============================================
   LEGAL PAGES (privacy / terms)
   ============================================ */
.legal-page { max-width: 800px; margin: 0 auto; padding: 80px 24px; }
.legal-page h1 { margin-bottom: 8px; font-size: 2rem; }
.legal-date { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 48px; }
.legal-toc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 48px;
}
.legal-toc h2 { font-size: 0.9rem; font-weight: 700; margin-bottom: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; }
.legal-toc ul { list-style: none; }
.legal-toc ul li { margin-bottom: 6px; }
.legal-toc ul li a { font-size: 0.875rem; color: var(--text-light); }
.legal-section { margin-bottom: 48px; scroll-margin-top: 80px; }
.legal-section h2 {
  font-size: 1.2rem;
  color: var(--accent);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.legal-section h3 { font-size: 1rem; margin: 20px 0 8px; color: var(--text); }
.legal-section p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 12px; line-height: 1.75; }
.legal-section ul { list-style: disc; padding-left: 20px; margin-bottom: 12px; }
.legal-section ul li { font-size: 0.9rem; color: var(--text-light); margin-bottom: 6px; line-height: 1.65; }
.legal-section a { color: var(--accent); }
.legal-section a:hover { text-decoration: underline; }
.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 40px;
}
.legal-back:hover { color: var(--accent); }
.legal-placeholder {
  background: rgba(245,158,11,0.08);
  border: 1px dashed rgba(245,158,11,0.3);
  border-radius: 4px;
  padding: 2px 6px;
  font-style: italic;
  color: var(--accent);
  font-size: 0.85em;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 960px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav__links, .nav__cta { display: none; }
  .hamburger { display: flex; }
  .hero { padding: 72px 0 60px; }
  .step-grid { grid-template-columns: 1fr; gap: 28px; }
  .step::after { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .compare-table { min-width: 560px; }
}

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; align-items: center; }
  .btn-lg { width: 100%; justify-content: center; }
  .footer__inner { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; }
  .footer__links { flex-wrap: wrap; gap: 12px; }
  .pricing-grid { max-width: 100%; }
}