:root {
  --background: #ECEEE6;
  --primary: #2D4A1E;
  --primary-light: #E8EDE3;
  --card: #FFFFFF;
  --text-primary: #1A1A1A;
  --text-secondary: #6B7280;
  --text-muted: #9CA3AF;
  --accent: #B8860B;
  --splash-bg: #F6F3EE;
  --border: #E5E7EB;
  --radius: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.75;
}

/* ── Header / Nav ─────────────────────────────── */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 24px;
}

.site-header .logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-header .logo-img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  transform: rotate(-12deg);
}

.site-header .logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.site-nav {
  display: flex;
  gap: 24px;
}

.site-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
}

.site-nav a:hover {
  color: var(--primary);
  opacity: 1;
}

/* ── Hero ─────────────────────────────────────── */

.hero {
  text-align: center;
  padding: 64px 24px 48px;
  max-width: 640px;
  margin: 0 auto;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto 28px;
  border-radius: 28px;
  transform: rotate(-12deg);
  animation: dolphin-float 3s ease-in-out infinite;
}

@keyframes dolphin-float {
  0%, 100% { transform: rotate(-12deg) translateY(0); }
  50% { transform: rotate(-12deg) translateY(-6px); }
}

.hero h1 {
  font-size: 40px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.hero .tagline {
  font-size: 20px;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 8px;
}

.hero .description {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 460px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

/* ── Buttons ──────────────────────────────────── */

.btn-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  opacity: 1;
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--primary);
  color: #FFFFFF;
}

.btn-secondary {
  background-color: var(--card);
  color: var(--primary);
  border: 1.5px solid var(--border);
}

/* ── Feature cards ────────────────────────────── */

.features {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.feature-card .icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Content pages (privacy, terms, about) ───── */

.page-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

.page-content h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.page-content .last-updated {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.page-content h2 {
  font-size: 20px;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.page-content p,
.page-content li {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 12px;
}

.page-content ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.page-content li {
  margin-bottom: 6px;
}

.page-content a {
  color: var(--primary);
  font-weight: 500;
}

.content-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 36px 32px;
  margin-bottom: 24px;
}

/* ── About page ───────────────────────────────── */

.about-hero {
  text-align: center;
  padding: 48px 24px 32px;
  max-width: 600px;
  margin: 0 auto;
}

.about-hero .logo {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  margin-bottom: 20px;
  transform: rotate(-12deg);
  animation: dolphin-float 3s ease-in-out infinite;
}

.about-hero h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
}

.about-hero p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Footer ───────────────────────────────────── */

.site-footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

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

.footer-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--primary);
  opacity: 1;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Responsive ───────────────────────────────── */

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    gap: 16px;
  }

  .site-nav {
    gap: 18px;
  }

  .hero {
    padding: 40px 20px 36px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero .tagline {
    font-size: 18px;
  }

  .btn-row {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  .features {
    grid-template-columns: 1fr;
    padding: 24px 20px 48px;
  }

  .page-content {
    padding: 24px 20px 64px;
  }

  .content-card {
    padding: 28px 22px;
  }

  .site-footer {
    flex-direction: column;
    text-align: center;
  }
}