/* ========================================================================
   PetPro Landing Page — style.css
   Friendly, warm aesthetic inspired by Cherie's design vocabulary
   ======================================================================== */

/* ---------- CSS Variables ---------- */
:root {
  /* Primary: Warm green (from Cherie palette) */
  --primary: #4CAF50;
  --primary-light: #66BB6A;
  --primary-dark: #388E3C;
  --primary-50: #E8F5E9;
  --primary-100: #C8E6C9;

  /* Secondary: Warm orange (from Cherie palette) */
  --secondary: #FF9800;
  --secondary-light: #FFB74D;
  --secondary-dark: #F57C00;
  --secondary-50: #FFF3E0;

  /* Accent: Soft coral for warmth */
  --coral: #FF8A80;
  --coral-light: #FFCDD2;

  /* Neutrals */
  --text: #1F2937;
  --text-secondary: #6B7280;
  --text-tertiary: #9CA3AF;
  --bg: #FFFDF9;
  --bg-alt: #FFF8F0;
  --white: #FFFFFF;
  --border: #E5E7EB;
  --border-light: #F3F4F6;

  /* PetPro brand red (from logo doghouse roof) */
  --brand-red: #E53935;
  --brand-teal: #26A69A;

  /* Layout */
  --max-width: 1100px;
  --nav-height: 64px;
  --radius: 16px;
  --radius-sm: 12px;
  --radius-xs: 8px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

/* ---------- Typography ---------- */
h1, h2, h3 { line-height: 1.3; }
h1 { font-size: 2.75rem; font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: 2rem; font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { font-size: 1.05rem; }

/* ---------- Utility ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 253, 249, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 24px;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.nav-brand span {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-dark);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}
.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ---------- Hero Section ---------- */
.hero {
  padding-top: calc(var(--nav-height) + 48px);
  padding-bottom: 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(170deg, var(--bg) 0%, var(--primary-50) 40%, var(--secondary-50) 70%, var(--bg) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(76, 175, 80, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -150px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 152, 0, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: var(--white);
  border: 1px solid var(--primary-100);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary-dark);
  margin-bottom: 24px;
}

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

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.hero h1 {
  max-width: 700px;
  margin: 0 auto 16px;
}

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

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 36px;
}

.hero-ctas {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  font-size: 1rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(76, 175, 80, 0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(76, 175, 80, 0.35);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--white);
  color: var(--text);
  font-weight: 600;
  font-size: 1rem;
  border-radius: 50px;
  border: 2px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* Hero visual: mockup cards */
.hero-visual {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 20px;
  perspective: 1000px;
}

.hero-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 230px;
  text-align: left;
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
  transition: transform 0.3s;
}
.hero-card:hover {
  transform: translateY(-4px);
}
.hero-card:nth-child(1) { transform: rotate(-3deg); }
.hero-card:nth-child(2) { transform: translateY(-12px); }
.hero-card:nth-child(3) { transform: rotate(3deg); }
.hero-card:hover { transform: translateY(-16px) rotate(0deg); }

.hero-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.hero-card-icon.green { background: var(--primary-50); }
.hero-card-icon.orange { background: var(--secondary-50); }
.hero-card-icon.coral { background: var(--coral-light); }

.hero-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.hero-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ---------- Stats Bar ---------- */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 40px 0;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}
.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ---------- Sections ---------- */
.section {
  padding: 80px 0;
}
.section-alt {
  background: var(--bg-alt);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

.section-header .section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary-50);
  color: var(--primary-dark);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-header h2 {
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
}

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

.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all 0.25s;
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  border-color: var(--primary-100);
  box-shadow: 0 8px 30px rgba(76, 175, 80, 0.08);
  transform: translateY(-4px);
}

.feature-card .icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 16px;
}
.icon-green { background: var(--primary-50); }
.icon-orange { background: var(--secondary-50); }
.icon-coral { background: var(--coral-light); }
.icon-teal { background: #E0F2F1; }
.icon-purple { background: #F3E5F5; }
.icon-blue { background: #E3F2FD; }

.feature-card h3 {
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- How It Works ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: calc(16.67% + 12px);
  right: calc(16.67% + 12px);
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 800;
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
}
.step:nth-child(1) .step-number {
  background: var(--primary-50);
  color: var(--primary);
}
.step:nth-child(2) .step-number {
  background: var(--secondary-50);
  color: var(--secondary-dark);
}
.step:nth-child(3) .step-number {
  background: var(--coral-light);
  color: var(--brand-red);
}

.step h3 {
  margin-bottom: 8px;
}
.step p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  max-width: 280px;
  margin: 0 auto;
}

/* ---------- Screenshot Showcase ---------- */
.showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.showcase-image {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}

.showcase-image .mock-screen {
  background: var(--border-light);
  border-radius: var(--radius-xs);
  padding: 20px;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mock-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.mock-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
}

.mock-line {
  height: 12px;
  border-radius: 6px;
  flex: 1;
}

.mock-line.short { max-width: 60%; }
.mock-line.medium { max-width: 80%; }

.showcase-text h2 { margin-bottom: 16px; }
.showcase-text p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.showcase-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.showcase-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
}

.showcase-list .check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary-50);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ---------- Testimonials / Trust ---------- */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.trust-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: all 0.25s;
}
.trust-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.trust-card .trust-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.trust-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.trust-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: all 0.25s;
  position: relative;
}
.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.08);
}
.pricing-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 8px 30px rgba(76,175,80,0.12);
}
.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 18px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 50px;
  white-space: nowrap;
}

.pricing-card .plan-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.pricing-card .plan-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.pricing-card .plan-period {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}

.pricing-card .plan-features {
  list-style: none;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.pricing-card .plan-features li {
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-card .plan-features li::before {
  content: '\2713';
  color: var(--primary);
  font-weight: 700;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-item summary {
  padding: 20px 24px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s;
}
.faq-item summary:hover { background: var(--border-light); }
.faq-item summary::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq-item[open] summary::after {
  content: '\2212';
  color: var(--primary);
}
.faq-item .faq-answer {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- CTA Section ---------- */
.cta-section {
  padding: 80px 0;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--secondary-50) 50%, var(--coral-light) 100%);
  position: relative;
}

.cta-section h2 {
  margin-bottom: 16px;
}

.cta-section p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--text);
  color: #D1D5DB;
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 12px;
  color: #9CA3AF;
}

.footer h4 {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: #9CA3AF;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: #6B7280;
}

/* ---------- Language Switcher ---------- */
.lang-switch {
  position: relative;
}
.lang-switch select {
  appearance: none;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 28px 6px 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
}
.lang-switch::after {
  content: '\25BE';
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  font-size: 0.7rem;
  color: var(--text-tertiary);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 16px;
  }
  .nav-links.open .nav-cta { width: 100%; justify-content: center; }

  .hero { padding-bottom: 48px; }
  .hero-visual { flex-direction: column; align-items: center; gap: 16px; }
  .hero-card { width: 280px; transform: none !important; }
  .hero-card:hover { transform: translateY(-4px) !important; }

  .stats-bar { gap: 24px; }

  .features-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 40px; }
  .steps::before { display: none; }

  .showcase { grid-template-columns: 1fr; gap: 32px; }
  .showcase.reverse .showcase-image { order: -1; }

  .trust-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-ctas { flex-direction: column; align-items: center; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .stats-bar { flex-direction: column; gap: 16px; }
}