/* ── NAVISIGN Website ── Dark Maritime Theme ── */
@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@300;400;500;600;700&display=swap');

:root {
  --bg: #0B1A23;
  --surface: #0E2230;
  --card: #173A4E;
  --card-light: #1D4258;
  --cyan: #00E5FF;
  --gold: #FFD700;
  --orange: #FF7A00;
  --red: #DC143C;
  --green: #1D9E75;
  --on-surface: #E0F7FA;
  --muted: #78909C;
  --border: #1C3A4F;
  --font: 'Rajdhani', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--on-surface);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(11, 26, 35, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--cyan);
  text-decoration: none;
}

.nav-logo span { color: var(--on-surface); font-weight: 400; }

.nav-links { display: flex; gap: 28px; }

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--cyan); }

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--cyan);
  margin: 5px 0;
  transition: 0.3s;
}

/* ── HERO ── */
.hero {
  padding: 160px 24px 80px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 229, 255, 0.06) 0%, transparent 60%);
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid var(--cyan);
  border-radius: 20px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  letter-spacing: 6px;
  color: var(--cyan);
  margin-bottom: 8px;
}

.hero h2 {
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 3px;
  margin-bottom: 32px;
}

.hero p {
  max-width: 560px;
  margin: 0 auto 40px;
  font-size: 17px;
  color: var(--muted);
  line-height: 1.7;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  background: var(--cyan);
  color: var(--bg);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 8px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 229, 255, 0.25);
}

.hero-cta svg { width: 18px; height: 18px; }

/* ── SECTIONS ── */
section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px;
}

.section-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 32px;
  text-align: center;
}

/* ── FEATURES GRID ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.feature-card {
  background: var(--card);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 14px;
  padding: 28px 24px;
  text-align: center;
  transition: transform 0.2s, border-color 0.3s;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 255, 0.5);
}

.feature-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 24px;
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.feature-card p {
  font-size: 13px;
  color: var(--muted);
}

/* ── STATS BAR ── */
.stats-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 48px;
  padding: 48px 24px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 0 auto;
  max-width: 1100px;
}

.stat { text-align: center; }

.stat-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--cyan);
}

.stat-label {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ── OFFLINE BANNER ── */
.offline-banner {
  max-width: 700px;
  margin: 0 auto;
  padding: 32px;
  background: var(--card);
  border: 1px solid var(--green);
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.offline-banner h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 8px;
}

.offline-banner p {
  color: var(--muted);
  font-size: 15px;
}

/* ── COMING SOON ── */
.coming-soon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.coming-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.coming-item .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}

.coming-item span {
  font-size: 14px;
  color: var(--muted);
  font-weight: 500;
}

/* ── HOW-TO PAGE ── */
.how-hero {
  padding: 140px 24px 60px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 229, 255, 0.06) 0%, transparent 60%);
}

.how-hero h1 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 4px;
  margin-bottom: 8px;
}

.how-hero p {
  color: var(--muted);
  font-size: 17px;
}

.steps {
  max-width: 800px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 24px;
  margin-bottom: 40px;
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--cyan);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
}

.step h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: 6px;
}

.step p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.tip-box {
  max-width: 800px;
  margin: 0 auto 32px;
  padding: 24px 28px;
  background: rgba(255, 215, 0, 0.06);
  border: 1px solid rgba(255, 215, 0, 0.25);
  border-radius: 12px;
}

.tip-box h4 {
  color: var(--gold);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.tip-box p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

/* ── PRIVACY PAGE ── */
.privacy-hero {
  padding: 140px 24px 60px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 229, 255, 0.06) 0%, transparent 60%);
}

.privacy-hero h1 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 4px;
  margin-bottom: 8px;
}

.privacy-hero p {
  color: var(--muted);
  font-size: 15px;
}

.privacy-content {
  max-width: 800px;
  margin: 0 auto;
}

.privacy-content h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--cyan);
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.privacy-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--on-surface);
  margin-top: 28px;
  margin-bottom: 12px;
}

.privacy-content p {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 14px;
  line-height: 1.7;
}

.privacy-content ul {
  list-style: none;
  padding: 0;
  margin-bottom: 14px;
}

.privacy-content li {
  padding: 6px 0 6px 20px;
  position: relative;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.privacy-content li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.privacy-content a {
  color: var(--cyan);
  text-decoration: none;
}

.privacy-content a:hover { text-decoration: underline; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--cyan); }

.footer-brand {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 4px;
}

.footer-brand .hhu {
  color: var(--gold);
  font-weight: 700;
  text-decoration: none;
}

.footer-brand .hhu:hover { text-decoration: underline; }

.footer-copy {
  font-size: 12px;
  color: #4a6070;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: block; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(11, 26, 35, 0.98);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }

  .hero { padding: 130px 20px 60px; }
  .stats-bar { gap: 28px; }
  .step { flex-direction: column; }
}