/* ========== FurTrack - Base & Reset ========== */
:root {
  --cream: #FFF8F0;
  --peach: #F4A88C;
  --peach-light: #FDE4D8;
  --peach-dark: #E88C6E;
  --sage: #A3B89F;
  --sage-light: #DCE8D9;
  --sage-dark: #7D9A78;
  --text: #3D3D3D;
  --text-muted: #8C8C8C;
  --white: #FFFFFF;
  --card-bg: #FFFFFF;
  --border: #F0E8E0;
  --shadow: 0 2px 16px rgba(60, 20, 10, 0.06);
  --shadow-lg: 0 8px 40px rgba(60, 20, 10, 0.10);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--peach-dark); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--peach); }

img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ========== Navigation ========== */
.nav {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
}

.nav-brand .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--peach-dark);
  background: var(--peach-light);
}

.lang-toggle {
  margin-left: 12px;
  padding: 8px 16px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  background: var(--white);
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-toggle:hover {
  border-color: var(--peach);
  color: var(--peach-dark);
}

/* ========== Hero Section ========== */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--peach-light) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
}

.hero .container { position: relative; z-index: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 6px 18px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--sage);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text);
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--peach), var(--peach-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 40px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--peach), var(--peach-dark));
  color: white;
  box-shadow: 0 4px 20px rgba(244, 168, 140, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(244, 168, 140, 0.45);
  color: white;
}

.btn-outline {
  background: var(--white);
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--peach);
  color: var(--peach-dark);
}

/* ========== Phone Mockup ========== */
.hero-mockup {
  margin-top: 50px;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.mockup-frame {
  width: 260px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: var(--transition);
}

.mockup-frame:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(60, 20, 10, 0.14);
}

.mockup-frame img {
  width: 100%;
  display: block;
}

.mockup-label {
  padding: 12px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  background: var(--cream);
  border-top: 1px solid var(--border);
}

/* ========== Features ========== */
.features {
  padding: 80px 0;
}

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

.section-header h2 {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  object-fit: contain;
  margin: 0 auto 20px;
  display: block;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========== Showcase / Screenshots ========== */
.showcase {
  padding: 60px 0 80px;
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.showcase-item {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.showcase-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.showcase-item img {
  width: 100%;
  display: block;
}

/* ========== CTA Section ========== */
.cta-section {
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 36px;
}

/* ========== Footer ========== */
.footer {
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

/* ========== Policy / Terms Pages ========== */
.policy-page {
  padding: 60px 0 80px;
}

.policy-page .container {
  max-width: 800px;
}

.policy-page h1 {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
  color: var(--text);
}

.policy-page .last-updated {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.policy-page h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--text);
}

.policy-page p,
.policy-page li {
  font-size: 1rem;
  color: var(--text);
  line-height: 1.75;
  margin-bottom: 12px;
}

.policy-page ul,
.policy-page ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.policy-page ul li,
.policy-page ol li {
  margin-bottom: 8px;
}

/* ========== Language Visibility ========== */
body[data-lang="en"] [lang="zh"] { display: none !important; }
body[data-lang="zh"] [lang="en"] { display: none !important; }

/* ========== Mobile Nav Burger ========== */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text);
  padding: 4px;
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2.2rem; }
  .hero-desc { font-size: 1rem; }
  .section-header h2 { font-size: 1.8rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .mockup-frame { width: 160px; }
  .policy-page h1 { font-size: 1.8rem; }

  .mobile-toggle { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    gap: 4px;
  }

  .nav-links.open { display: flex; }

  .lang-toggle { margin-left: 0; margin-top: 4px; }

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

@media (max-width: 480px) {
  .showcase-grid { grid-template-columns: 1fr; }
  .mockup-frame { width: 140px; }
  .hero-cta { flex-direction: column; align-items: center; }
}