/* ============================================================
   PetLab — style-shared.css
   Shared across all pages — LIGHT MODE
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700&family=Inter:wght@400;500;600&display=swap');

/* ============================================================
   CSS Variables
   ============================================================ */
:root {
  --bg-primary:    #FFFFFF;
  --bg-secondary:  #F4F8F6;
  --accent:        #52C98A;       /* bright green — icons, badges, stats */
  --accent-rgb:    82, 201, 138;
  --accent-dark:   #0D2B1F;       /* dark green — buttons, CTAs */
  --accent-mid:    #1E5C3A;
  --accent-bright: #52C98A;
  --text-primary:  #0D2B1F;
  --text-muted:    #4A7A62;
  --border:        rgba(13, 43, 31, 0.1);
  --card-bg:       rgba(13, 43, 31, 0.03);
  --card-border:   rgba(13, 43, 31, 0.08);
  --radius-card:   20px;
  --radius-btn:    12px;
  --transition:    0.25s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: auto; /* never smooth — breaks frame-accurate scroll */
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  overflow-y: scroll;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: 'Sora', sans-serif;
  line-height: 1.2;
  color: var(--text-primary);
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* ============================================================
   Selection & Scrollbar
   ============================================================ */
::selection {
  background: var(--accent);
  color: var(--accent-dark);
}

::-webkit-scrollbar {
  width: 5px;
}
::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
  background: var(--accent-dark);
  border-radius: 3px;
}

/* ============================================================
   Scroll Progress Bar
   ============================================================ */
#scrollProgress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  z-index: 10000;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* ============================================================
   Starscape — hidden in light mode
   ============================================================ */
#starscape {
  display: none;
}

/* ============================================================
   Navbar
   ============================================================ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  background: transparent;
}

.nav-inner {
  max-width: 100%;
  margin: 0 auto;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#navbar.nav-scrolled .nav-inner {
  max-width: 960px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(13, 43, 31, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 100px;
  padding: 10px 28px;
  box-shadow: 0 4px 24px rgba(13, 43, 31, 0.08);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-logo img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  border-radius: 6px;
}

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

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  background: var(--accent-dark) !important;
  color: #FFFFFF !important;
  padding: 9px 20px;
  border-radius: 100px;
  font-weight: 600 !important;
  font-size: 0.875rem !important;
  transition: all var(--transition) !important;
  box-shadow: 0 2px 12px rgba(13, 43, 31, 0.2);
}

.nav-cta:hover {
  box-shadow: 0 4px 20px rgba(13, 43, 31, 0.3);
  transform: translateY(-1px);
  opacity: 0.9;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  transition: color 0.2s ease;
  font-family: 'Inter', sans-serif;
  text-transform: uppercase;
}

.lang-btn:hover { color: var(--text-primary); }
.lang-btn.active { color: var(--accent-dark); }

.lang-divider {
  color: rgba(13, 43, 31, 0.2);
  font-size: 0.7rem;
  user-select: none;
}

/* Mobile panel lang switcher */
.mobile-lang-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(13, 43, 31, 0.08);
  margin-bottom: 8px;
}

/* Hamburger (mobile) */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Mobile nav panel */
.nav-mobile-panel {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  background: #FFFFFF;
  border-left: 1px solid rgba(13, 43, 31, 0.1);
  z-index: 9998;
  padding: 80px 32px 40px;
  flex-direction: column;
  gap: 24px;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: -8px 0 40px rgba(13, 43, 31, 0.08);
}

.nav-mobile-panel.open {
  transform: translateX(0);
}

.nav-mobile-panel a {
  font-family: 'Sora', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 12px 0;
  border-bottom: 1px solid rgba(13, 43, 31, 0.06);
  transition: color var(--transition);
}

.nav-mobile-panel a:hover {
  color: var(--accent-dark);
}

.nav-mobile-panel .nav-cta {
  display: inline-block;
  border-radius: var(--radius-btn);
  text-align: center;
  border-bottom: none;
  margin-top: 8px;
}

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(13, 43, 31, 0.3);
  z-index: 9997;
}

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

/* ============================================================
   Buttons
   ============================================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-dark);
  color: #FFFFFF;
  padding: 15px 32px;
  border-radius: var(--radius-btn);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 2px 16px rgba(13, 43, 31, 0.2);
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  box-shadow: 0 4px 28px rgba(13, 43, 31, 0.3);
  transform: translateY(-2px);
  opacity: 0.92;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  padding: 15px 32px;
  border: 1.5px solid rgba(13, 43, 31, 0.2);
  border-radius: var(--radius-btn);
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
}

.btn-secondary:hover {
  border-color: var(--accent-dark);
  background: rgba(13, 43, 31, 0.04);
  transform: translateY(-1px);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-muted);
  padding: 13px 28px;
  border: 1px solid rgba(13, 43, 31, 0.12);
  border-radius: var(--radius-btn);
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: rgba(13, 43, 31, 0.25);
}

/* ============================================================
   Section Layout
   ============================================================ */
.section-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-title {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 64px;
  line-height: 1.7;
}

.badge-tag {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-dark);
  background: rgba(82, 201, 138, 0.12);
  border: 1px solid rgba(82, 201, 138, 0.3);
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}

/* ============================================================
   Feature Card (shared)
   ============================================================ */
.feature-card {
  background: #FFFFFF;
  border: 1px solid rgba(13, 43, 31, 0.08);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(82, 201, 138, 0.35);
  box-shadow: 0 8px 40px rgba(13, 43, 31, 0.07);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 20px;
  color: var(--accent);
  line-height: 1;
}

.feature-icon i {
  font-size: 2rem;
}

.feature-card h3 {
  font-family: 'Sora', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ============================================================
   Orb / Background decorations
   ============================================================ */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.orb-accent {
  background: var(--accent);
  opacity: 0.08;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13, 43, 31, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 43, 31, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* ============================================================
   Fade-up animation (IntersectionObserver)
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Footer — dark section
   ============================================================ */
footer {
  background: #0D2B1F;
  border-top: none;
  padding: 64px 32px 40px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: #F4F8F6;
}

.footer-brand img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  border-radius: 6px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
  margin-bottom: 32px;
}

.footer-links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

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

.footer-divider {
  width: 1px;
  height: 14px;
  background: rgba(255, 255, 255, 0.1);
  display: inline-block;
  vertical-align: middle;
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.3);
}

/* Footer lang switcher overrides */
footer .lang-btn {
  color: rgba(255, 255, 255, 0.45);
}

footer .lang-btn:hover {
  color: rgba(255, 255, 255, 0.8);
}

footer .lang-btn.active {
  color: var(--accent);
}

footer .lang-divider {
  color: rgba(255, 255, 255, 0.15);
}

/* ============================================================
   ElevenLabs chat placeholder
   ============================================================ */
#chat-placeholder {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9000;
  background: var(--accent-dark);
  color: #FFFFFF;
  padding: 14px 20px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(13, 43, 31, 0.2);
  transition: all var(--transition);
  font-family: 'Inter', sans-serif;
}

#chat-placeholder:hover {
  box-shadow: 0 8px 32px rgba(13, 43, 31, 0.3);
  transform: translateY(-2px);
}

/* ============================================================
   Shared page hero (non-homepage)
   ============================================================ */
.page-hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 160px 32px 100px;
  position: relative;
  overflow: hidden;
  z-index: 1;
  background: var(--bg-secondary);
}

.page-hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
  color: var(--text-primary);
}

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

.page-hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-mobile-panel {
    display: flex;
  }

  .section-container {
    padding: 0 20px;
  }

  footer {
    padding: 48px 20px 32px;
  }

  .footer-links {
    flex-direction: column;
    gap: 16px;
    align-items: center;
  }

  .footer-divider {
    display: none;
  }

  .page-hero {
    padding: 120px 20px 80px;
    min-height: 60vh;
  }
}

@media (max-width: 480px) {
  .btn-primary,
  .btn-secondary {
    padding: 13px 24px;
    font-size: 0.9rem;
  }
}