/* PetVax AI — Marketing site design system */

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

:root {
  --primary: #3a7ca5;
  --primary-light: #4e8fbf;
  --primary-dark: #2d5a7a;
  --secondary: #7fb26d;
  --secondary-light: #9bc88a;
  --secondary-dark: #6a9d5a;
  --accent-warm: #f0a04b;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --border: rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.14);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --nav-height: 76px;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --max-width: 1180px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  line-height: 1.65;
  background: var(--bg-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

.container {
  width: min(100% - 2.5rem, var(--max-width));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  background: var(--primary);
  color: white;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

/* Navigation */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.scrolled {
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.brand img {
  height: 52px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-primary);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  inset-inline: 0;
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.25rem 1.5rem;
  box-shadow: var(--shadow-md);
  z-index: 999;
}

.mobile-nav.open {
  display: block;
}

.mobile-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav a {
  display: block;
  padding: 0.85rem 1rem;
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.mobile-nav a:hover {
  background: var(--bg-light);
}

.mobile-nav .btn {
  width: 100%;
  margin-top: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  touch-action: manipulation;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 16px rgba(58, 124, 165, 0.35);
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border-color: rgba(58, 124, 165, 0.35);
}

.btn-secondary:hover {
  background: var(--bg-light);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.25);
}

.btn-lg {
  padding: 0.95rem 1.75rem;
  font-size: 1rem;
}

.store-icon {
  width: 1.15em;
  height: 1.15em;
  flex-shrink: 0;
}

/* Hero */
.hero {
  position: relative;
  padding: calc(var(--nav-height) + 2.5rem) 0 2.5rem;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(127, 178, 109, 0.18), transparent 60%),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(58, 124, 165, 0.12), transparent 55%),
    linear-gradient(180deg, #eef5fa 0%, #f8fafc 55%, white 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  background: white;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.hero-badge span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.hero h1 em {
  font-style: normal;
  color: var(--primary);
}

.hero-lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 34rem;
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.trust-item svg {
  width: 18px;
  height: 18px;
  color: var(--secondary);
  flex-shrink: 0;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-photo-wrap {
  position: relative;
  width: min(100%, 420px);
}

.hero-photo {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 4px solid white;
}

.hero-photo img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.floating-card {
  position: absolute;
  background: white;
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.85rem;
  font-weight: 600;
  animation: float 5s ease-in-out infinite;
}

.floating-card svg,
.floating-card img {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.floating-card.reminder {
  top: 12%;
  left: -8%;
  animation-delay: 0s;
}

.floating-card.vaccine {
  bottom: 18%;
  right: -6%;
  animation-delay: 1.5s;
}

.floating-card.ai {
  top: 55%;
  left: -12%;
  animation-delay: 0.8s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Stats strip */
.stats-strip {
  padding: 2rem 0;
  border-block: 1px solid var(--border);
  background: white;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  text-align: center;
}

.stat-item h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.stat-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Section headers */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--secondary-dark);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.5vw, 2.65rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* Features grid */
.features-section {
  padding: 3.5rem 0 5rem;
  background: var(--bg-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.15rem;
}

.feature-icon.blue { background: rgba(58, 124, 165, 0.12); }
.feature-icon.green { background: rgba(127, 178, 109, 0.15); }
.feature-icon.amber { background: rgba(240, 160, 75, 0.15); }

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Feature showcases */
.showcase-section {
  padding: 5rem 0;
}

.showcase-section:nth-child(even) {
  background: white;
}

.showcase-section:nth-child(odd) {
  background: var(--bg-light);
}

.showcase-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.showcase-row.reverse .showcase-content {
  order: 2;
}

.showcase-row.reverse .showcase-visual {
  order: 1;
}

.showcase-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.showcase-content p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.feature-list li svg {
  width: 20px;
  height: 20px;
  color: var(--secondary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Phone mockups */
.phone-mockup {
  position: relative;
  width: min(100%, 300px);
  margin-inline: auto;
  background: var(--text-primary);
  border-radius: 36px;
  padding: 12px;
  box-shadow: var(--shadow-lg);
}

.phone-screen {
  border-radius: 26px;
  overflow: hidden;
  background: white;
  min-height: 420px;
  display: flex;
  flex-direction: column;
}

.phone-notch {
  height: 28px;
  background: var(--text-primary);
  position: relative;
}

.phone-notch::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 12px;
  background: #1e293b;
  border-radius: 999px;
}

.mock-header {
  padding: 1rem 1.15rem 0.75rem;
  background: var(--primary);
  color: white;
}

.mock-header h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.mock-header p {
  font-size: 0.75rem;
  opacity: 0.85;
  margin-top: 0.15rem;
}

.mock-body {
  padding: 1rem 1.15rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.mock-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.mock-row .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.mock-row .dot.done { background: var(--secondary); }
.mock-row .dot.due { background: var(--accent-warm); }

.mock-row strong {
  display: block;
  font-size: 0.82rem;
}

.mock-row span {
  color: var(--text-secondary);
  font-size: 0.72rem;
}

.mock-chat {
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  font-size: 0.78rem;
  line-height: 1.5;
}

.mock-chat.user {
  background: rgba(58, 124, 165, 0.1);
  align-self: flex-end;
  max-width: 85%;
}

.mock-chat.ai {
  background: white;
  border: 1px solid var(--border);
  max-width: 90%;
}

.mock-pdf {
  text-align: center;
  padding: 2rem 1rem;
}

.mock-pdf-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
}

.mock-food-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.mock-food-item {
  padding: 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  text-align: center;
  font-weight: 600;
}

.mock-food-item.safe {
  background: rgba(127, 178, 109, 0.15);
  color: var(--secondary-dark);
}

.mock-food-item.unsafe {
  background: rgba(239, 68, 68, 0.1);
  color: #b91c1c;
}

.showcase-visual {
  position: relative;
}

.showcase-visual .pet-accent {
  position: absolute;
  width: 64px;
  height: 64px;
  opacity: 0.9;
}

.showcase-visual .pet-accent.dog {
  top: -10px;
  right: 10%;
}

.showcase-visual .pet-accent.cat {
  bottom: -10px;
  left: 8%;
}

/* How it works */
.how-section {
  padding: 5.5rem 0;
  background: white;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.step-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--bg-light);
  border: 1px solid var(--border);
  position: relative;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.step-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

.step-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* FAQ */
.faq-section {
  padding: 5.5rem 0;
  background: var(--bg-light);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.35rem;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  color: var(--text-primary);
}

.faq-question svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.25s ease;
  color: var(--text-muted);
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 1.35rem 1.15rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

/* CTA */
.cta-section {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  color: white;
  text-align: center;
}

.cta-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  margin-bottom: 1rem;
}

.cta-section > .container > p {
  font-size: 1.1rem;
  opacity: 0.92;
  max-width: 560px;
  margin: 0 auto 2rem;
}

.store-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.5rem;
  background: rgba(255, 255, 255, 0.12);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  color: white;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease;
}

.store-badge:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

.store-badge svg {
  width: 28px;
  height: 28px;
}

.store-badge small {
  display: block;
  font-size: 0.68rem;
  opacity: 0.85;
  font-weight: 400;
}

.store-badge strong {
  font-size: 1rem;
}

.cta-note {
  margin-top: 1.75rem;
  font-size: 0.9rem;
  opacity: 0.75;
}

/* Footer */
.site-footer {
  background: var(--text-primary);
  color: rgba(255, 255, 255, 0.75);
  padding: 3.5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand img {
  height: 44px;
  margin-bottom: 1rem;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  color: white;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
}

.disclaimer {
  padding: 1.5rem 0 0;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.6;
  max-width: 720px;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .showcase-row,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .showcase-row.reverse .showcase-content,
  .showcase-row.reverse .showcase-visual {
    order: unset;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-inline: auto;
  }

  .floating-card.reminder { left: 0; }
  .floating-card.vaccine { right: 0; }
  .floating-card.ai { left: 0; }

  .nav-links,
  .nav-actions {
    display: none;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
  }

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