/* ========================================
   CardSaved — Shared Design System
   ======================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --brand: #0f4c81;
  --brand-dark: #0a3259;
  --brand-light: #e6f0f8;
  --accent: #10b981;
  --accent-dark: #059669;
  --text: #111827;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --bg: #ffffff;
  --bg-alt: #f8fafb;
  --bg-dark: #0f172a;
  --border: #e5e7eb;
  --border-light: #f3f4f6;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --max-width: 1200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-dark); }
img { max-width: 100%; height: auto; }

/* ===== LAYOUT ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 24px; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: #fff; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 64px; }
.section-header h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; letter-spacing: -0.5px; margin-bottom: 16px; }
.section-header p { font-size: 18px; color: var(--text-secondary); line-height: 1.7; }
.section-dark .section-header p { color: rgba(255,255,255,0.7); }

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  padding: 0 24px;
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--brand);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.nav-logo span { color: var(--text); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  font-family: inherit;
  line-height: 1;
}
.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 2px 8px rgba(15,76,129,0.25);
}
.btn-primary:hover { background: var(--brand-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(15,76,129,0.3); }
.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border: 2px solid var(--border);
}
.btn-secondary:hover { border-color: var(--brand); color: var(--brand); }
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: var(--accent-dark); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--brand);
  border: 2px solid var(--brand);
}
.btn-outline:hover { background: var(--brand); color: #fff; }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-lg { padding: 18px 36px; font-size: 17px; }
.btn-full { width: 100%; }
.btn-white { background: #fff; color: var(--brand-dark); }
.btn-white:hover { background: #f0f0f0; color: var(--brand-dark); }

/* ===== CARDS ===== */
.card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 32px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card-icon { font-size: 32px; margin-bottom: 16px; }
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.card p { font-size: 15px; color: var(--text-secondary); line-height: 1.6; }

/* ===== GRID ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ===== TRUST ROW ===== */
.trust-row {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
}
.trust-item {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.trust-item svg { width: 16px; height: 16px; opacity: 0.5; }

/* ===== STEPS ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; max-width: 900px; margin: 0 auto; }
.step { text-align: center; }
.step-num {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--brand-light);
  color: var(--brand);
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.step h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 15px; color: var(--text-secondary); }

/* ===== PRICING ===== */
.pricing-card {
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  text-align: center;
}
.pricing-card.featured {
  border-color: var(--brand);
  box-shadow: 0 8px 32px rgba(15,76,129,0.12);
  position: relative;
}
.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--brand);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
}
.pricing-name { font-size: 20px; font-weight: 700; margin-bottom: 16px; }
.pricing-amount { font-size: 42px; font-weight: 900; letter-spacing: -1px; }
.pricing-amount span { font-size: 16px; font-weight: 500; color: var(--text-secondary); }
.pricing-desc { font-size: 14px; color: var(--text-secondary); margin: 8px 0 24px; }
.pricing-features { list-style: none; text-align: left; margin-bottom: 32px; }
.pricing-features li {
  padding: 10px 0;
  font-size: 15px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 10px;
}
.pricing-features li::before {
  content: '';
  width: 20px; height: 20px;
  background: var(--brand-light);
  border-radius: 50%;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230f4c81' stroke-width='3'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
}

/* ===== FAQ ===== */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.faq-item summary {
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::after {
  content: '+';
  font-size: 20px;
  color: var(--brand);
  flex-shrink: 0;
  transition: transform 0.2s;
}
.faq-item[open] summary::after { content: '\2212'; }
.faq-item p { margin-top: 12px; color: var(--text-secondary); font-size: 15px; line-height: 1.7; }

/* ===== FOOTER ===== */
.footer {
  padding: 48px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 14px; color: var(--text-secondary); text-decoration: none; }
.footer-links a:hover { color: var(--text); }
.footer-copy { font-size: 14px; color: var(--text-muted); }

/* ===== FORMS ===== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.form-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.form-input:focus { border-color: var(--brand); }
textarea.form-input { min-height: 120px; resize: vertical; }

/* ===== BADGE / PILL ===== */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.badge-brand { background: var(--brand-light); color: var(--brand); }
.badge-accent { background: #d1fae5; color: #065f46; }

.pill {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  background: var(--bg-alt);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* ===== HERO ===== */
.hero {
  padding: 140px 24px 80px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
}
.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1px;
  max-width: 780px;
  margin: 0 auto 20px;
}
.hero .subhead {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-buttons {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== USE CASE TILES ===== */
.use-case-tiles {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
}
.use-case-tile {
  flex: 0 0 220px;
  scroll-snap-align: start;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  transition: box-shadow 0.2s, transform 0.2s;
}
.use-case-tile:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); color: var(--text); }
.use-case-tile-icon { font-size: 36px; margin-bottom: 12px; }
.use-case-tile h3 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.use-case-tile p { font-size: 13px; color: var(--text-secondary); }

/* ===== PILOT OFFER ===== */
.pilot-section {
  background: linear-gradient(135deg, var(--brand-dark), var(--brand));
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  max-width: 900px;
  margin: 0 auto;
}
.pilot-section h2 { font-size: 32px; font-weight: 800; margin-bottom: 24px; }
.pilot-section ul { list-style: none; margin-bottom: 32px; }
.pilot-section li {
  padding: 10px 0;
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: 0.95;
}
.pilot-section li::before {
  content: '';
  width: 24px; height: 24px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
  background-size: 14px;
  background-repeat: no-repeat;
  background-position: center;
}

/* ===== SECURITY PAGE ===== */
.security-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.security-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.security-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.security-card p { font-size: 14px; color: var(--text-secondary); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 32px; }
  .nav-links a:not(.btn) { display: none; }
  .hero { padding: 120px 24px 60px; }
  .hero h1 { font-size: 28px; }
  .section { padding: 64px 24px; }
  .section-header { margin-bottom: 40px; }
  .pilot-section { padding: 40px 28px; }
  .security-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
  .use-case-tiles { gap: 12px; }
  .use-case-tile { flex: 0 0 180px; }
}