/* ═══════════════════════════════════════════════════════════════════
   Vaultary — Static Landing Page CSS
   Dark theme, optimized for nginx static hosting
   ═══════════════════════════════════════════════════════════════════ */

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

:root {
  --bg-primary:      #0f1117;
  --bg-secondary:    #161b27;
  --bg-card:         #1a2035;
  --bg-card-hover:   #1f2740;
  --border:          rgba(255,255,255,0.08);
  --border-highlight:rgba(99,102,241,0.5);
  --text-primary:    #f0f2f8;
  --text-secondary:  #9ca3af;
  --text-muted:      #6b7280;
  --accent:          #6366f1;
  --accent-hover:    #4f46e5;
  --accent-bg:       rgba(99,102,241,0.12);
  --accent-glow:     rgba(99,102,241,0.25);
  --success:         #10b981;
  --navbar-height:   64px;
  --radius:          12px;
  --radius-sm:       8px;
  --shadow-card:     0 4px 24px rgba(0,0,0,0.35);
  --shadow-glow:     0 0 40px rgba(99,102,241,0.2);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ── Utility ──────────────────────────────────────────────────────── */
.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
}

/* ── Buttons ──────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: inherit;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-bg);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover { color: var(--accent); }

.btn-sm  { padding: 8px 18px;  font-size: 0.875rem; }
.btn-lg  { padding: 14px 32px; font-size: 1rem; }
.btn-full { width: 100%; }

/* ═══════════════════════════════════════════════
   NAVBAR
══════════════════════════════════════════════════ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--navbar-height);
  background: rgba(15,17,23,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}

.navbar-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
}

.navbar-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.15s;
}
.navbar-link:hover { color: var(--text-primary); }

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.navbar-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.navbar-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.2s;
}
.navbar-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-burger.open span:nth-child(2) { opacity: 0; }
.navbar-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.navbar-mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 16px 24px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}
.navbar-mobile.open { display: flex; }
.navbar-mobile-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.navbar-mobile-link:last-of-type { border-bottom: none; margin-bottom: 8px; }
.navbar-mobile-link:hover { color: var(--text-primary); }

/* ═══════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════ */
.hero {
  position: relative;
  padding: 96px 24px 80px;
  text-align: center;
  overflow: hidden;
}

/* Radial gradient background glow */
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(99,102,241,0.18) 0%, transparent 70%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 39px,
      rgba(255,255,255,0.025) 39px,
      rgba(255,255,255,0.025) 40px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 39px,
      rgba(255,255,255,0.025) 39px,
      rgba(255,255,255,0.025) 40px
    );
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid var(--border-highlight);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.hero-subtitle-inline {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  padding: 20px 32px;
  max-width: 560px;
  margin: 0 auto;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 28px;
}

.hero-stat-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.hero-stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.hero-stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════
   FEATURES
══════════════════════════════════════════════════ */
.features {
  padding: 96px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ═══════════════════════════════════════════════
   PRICING
══════════════════════════════════════════════════ */
.pricing {
  padding: 96px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.pricing-card--highlight {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-glow);
}

.pricing-badge {
  display: inline-block;
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid var(--border-highlight);
  border-radius: 100px;
  padding: 3px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  width: fit-content;
}

.pricing-badge--pro {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.pricing-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 28px;
}

.pricing-amount {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.pricing-period {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.check {
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-footer-link {
  text-align: center;
  margin-top: 32px;
}

/* ═══════════════════════════════════════════════
   CTA BANNER
══════════════════════════════════════════════════ */
.cta-banner {
  padding: 80px 24px;
  background:
    linear-gradient(135deg, rgba(99,102,241,0.15) 0%, rgba(99,102,241,0.04) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cta-inner {
  text-align: center;
}

.cta-title {
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.cta-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ═══════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 48px 24px 0;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 40px;
  flex-wrap: wrap;
}

.footer-logo {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.footer-email {
  font-size: 0.875rem;
  color: var(--accent);
}
.footer-email:hover { text-decoration: underline; }

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.15s;
}
.footer-link:hover { color: var(--text-primary); }

.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
  padding: 16px 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ═══════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  .navbar-links,
  .navbar-actions { display: none; }
  .navbar-burger { display: flex; }

  .hero { padding: 72px 20px 60px; }

  .features-grid { grid-template-columns: 1fr; }

  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; }

  .hero-stats { flex-direction: column; padding: 20px 24px; gap: 12px; }
  .hero-stat-divider { width: 60px; height: 1px; }

  .footer-inner { flex-direction: column; gap: 24px; }
  .footer-links { gap: 16px; }
}

@media (max-width: 400px) {
  .btn-lg { padding: 12px 22px; font-size: 0.95rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .cta-actions { flex-direction: column; align-items: stretch; }
}