/* ========================================
   Zinoo Live - Pinterest-inspired Design System
   Based on DESIGN.md tokens
   ======================================== */

/* --- CSS Custom Properties (from DESIGN.md) --- */
:root {
  /* Colors */
  --primary: #e60023;
  --on-primary: #ffffff;
  --primary-pressed: #cc001f;
  --ink: #000000;
  --ink-soft: #211922;
  --body: #33332e;
  --charcoal: #262622;
  --mute: #62625b;
  --ash: #91918c;
  --stone: #c8c8c1;
  --hairline: #dadad3;
  --hairline-soft: #e5e5e0;
  --secondary-bg: #e5e5e0;
  --secondary-pressed: #c8c8c1;
  --canvas: #ffffff;
  --surface-soft: #fbfbf9;
  --surface-card: #f6f6f3;
  --surface-dark: #262622;
  --on-dark: #ffffff;
  --on-dark-mute: rgba(255,255,255,0.7);
  --focus-outer: #435ee5;
  --accent-purple: #7e238b;

  /* Radii */
  --rounded-none: 0px;
  --rounded-sm: 8px;
  --rounded-md: 16px;
  --rounded-lg: 32px;
  --rounded-full: 9999px;

  /* Spacing */
  --space-xxs: 4px;
  --space-xs: 6px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-section: 64px;

  /* Typography sizes */
  --display-xl: 70px;
  --display-lg: 44px;
  --heading-xl: 28px;
  --heading-lg: 22px;
  --heading-md: 18px;
  --body-md: 16px;
  --body-sm: 14px;
  --caption-md: 12px;
  --button-md: 14px;
}

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

html {
  scroll-behavior: smooth;
}

/* --- Base Typography --- */
body {
  font-family: 'Inter', 'Cairo', -apple-system, system-ui, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: var(--body-md);
  font-weight: 400;
  line-height: 1.4;
  color: var(--body);
  background: var(--surface-soft);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-thumb {
  background: var(--stone);
  border-radius: var(--rounded-full);
}

::-webkit-scrollbar-track {
  background: var(--surface-card);
}

/* --- Container --- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ========================================
   PRIMARY NAV
   ======================================== */
.primary-nav {
  position: fixed;
  top: 0;
  width: 100%;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-xl);
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  z-index: 1000;
}

.nav-logo img {
  height: 48px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: var(--body-md);
  font-weight: 600;
  color: var(--ink);
  transition: color 0.2s;
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--on-primary) !important;
  font-size: var(--button-md);
  font-weight: 700;
  padding: 6px 14px;
  height: 40px;
  border-radius: var(--rounded-md);
  transition: background 0.2s;
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--primary-pressed);
  color: var(--on-primary) !important;
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: var(--rounded-full);
  align-items: center;
  justify-content: center;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  position: relative;
  transition: 0.3s;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
}

.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }

/* ========================================
   HERO
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(64px + var(--space-section)) var(--space-xl) var(--space-section);
  background: var(--surface-soft);
}

.hero-inner {
  max-width: 1280px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-section);
  align-items: center;
}

.hero-text h1 {
  font-size: var(--display-xl);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -1.2px;
  color: var(--ink);
  margin-bottom: var(--space-xl);
}

.hero-text h1 .accent {
  color: var(--primary);
}

.hero-text p {
  font-size: var(--heading-md);
  color: var(--mute);
  line-height: 1.6;
  margin-bottom: var(--space-xxl);
  max-width: 520px;
}

.hero-buttons {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image img {
  max-width: 420px;
  width: 100%;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.08));
}

/* ========================================
   BUTTONS
   ======================================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--on-primary);
  font-size: var(--button-md);
  font-weight: 700;
  padding: 6px 14px;
  height: 40px;
  border-radius: var(--rounded-md);
  transition: background 0.2s, transform 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--primary-pressed);
  transform: translateY(-1px);
}

.btn-primary.btn-lg {
  height: 48px;
  padding: 8px 24px;
  font-size: var(--body-md);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary-bg);
  color: var(--ink);
  font-size: var(--button-md);
  font-weight: 700;
  padding: 6px 14px;
  height: 40px;
  border-radius: var(--rounded-md);
  transition: background 0.2s;
  border: none;
  cursor: pointer;
}

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

.btn-secondary.btn-lg {
  height: 48px;
  padding: 8px 24px;
  font-size: var(--body-md);
}

/* ========================================
   STATS BAR
   ======================================== */
.stats-bar {
  background: var(--surface-dark);
  padding: var(--space-xxl) var(--space-xl);
}

.stats-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.stat-item {
  text-align: center;
}

.stat-item h3 {
  font-size: var(--heading-xl);
  font-weight: 700;
  color: var(--on-dark);
  letter-spacing: -1.2px;
  margin-bottom: var(--space-xxs);
}

.stat-item p {
  font-size: var(--body-sm);
  color: var(--on-dark-mute);
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
  padding: var(--space-section) var(--space-xl);
}

.section-alt {
  background: var(--canvas);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-section);
}

.section-header h2 {
  font-size: var(--display-lg);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.8px;
  color: var(--ink);
  margin-bottom: var(--space-md);
}

.section-header p {
  font-size: var(--body-md);
  color: var(--mute);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ========================================
   SERVICES / FEATURES GRID
   ======================================== */
.services-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.service-card {
  background: var(--surface-card);
  border-radius: var(--rounded-md);
  padding: var(--space-xxl);
  text-align: center;
  transition: transform 0.3s;
}

.service-card:hover {
  transform: translateY(-4px);
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-xl);
  border-radius: var(--rounded-md);
  overflow: hidden;
}

.service-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-card h3 {
  font-size: var(--heading-md);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--space-sm);
}

.service-card p {
  font-size: var(--body-sm);
  color: var(--mute);
  line-height: 1.6;
}

/* ========================================
   FEATURE ROWS (alternating text + image)
   ======================================== */
.feature-row {
  max-width: 1280px;
  margin: 0 auto var(--space-section);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-section);
  align-items: center;
}

.feature-row:last-child {
  margin-bottom: 0;
}

.feature-row.reverse .feature-media {
  order: -1;
}

.feature-text h3 {
  font-size: var(--heading-xl);
  font-weight: 700;
  letter-spacing: -1.2px;
  color: var(--ink);
  margin-bottom: var(--space-lg);
}

.feature-text p {
  font-size: var(--body-md);
  color: var(--mute);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
}

.feature-media {
  border-radius: var(--rounded-lg);
  overflow: hidden;
  background: var(--surface-card);
}

.feature-media img {
  width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   PRICING CARDS
   ======================================== */
.pricing-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.pricing-card {
  background: var(--canvas);
  border-radius: var(--rounded-md);
  padding: var(--space-xxl);
  text-align: center;
  position: relative;
  border: 1px solid var(--hairline);
  transition: transform 0.3s;
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card.popular {
  border: 2px solid var(--primary);
  transform: scale(1.04);
}

.pricing-card.popular:hover {
  transform: scale(1.04) translateY(-4px);
}

.pricing-tag {
  position: absolute;
  top: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--on-primary);
  font-size: var(--caption-md);
  font-weight: 700;
  padding: var(--space-xxs) var(--space-md);
  border-radius: var(--rounded-full);
}

.pricing-card h3 {
  font-size: var(--heading-lg);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--space-lg);
  margin-top: var(--space-xl);
}

.pricing-price {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-xl);
  letter-spacing: -1px;
}

.pricing-price .currency {
  font-size: var(--heading-md);
  font-weight: 600;
  color: var(--mute);
}

.pricing-features {
  margin-bottom: var(--space-xxl);
}

.pricing-features li {
  padding: var(--space-md) 0;
  color: var(--body);
  font-size: var(--body-sm);
  border-bottom: 1px solid var(--hairline-soft);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-card .btn-primary {
  width: 100%;
}

/* ========================================
   TESTIMONIALS
   ======================================== */
.testimonials-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.testimonial-card {
  background: var(--surface-card);
  border-radius: var(--rounded-md);
  padding: var(--space-xxl);
}

.testimonial-card p {
  font-size: var(--body-md);
  color: var(--body);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.testimonial-stars {
  color: var(--primary);
  font-size: var(--body-md);
  letter-spacing: 2px;
}

/* ========================================
   FAQ
   ======================================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface-card);
  border-radius: var(--rounded-md);
  margin-bottom: var(--space-lg);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: var(--space-xl);
  font-size: var(--heading-md);
  font-weight: 600;
  color: var(--ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: var(--heading-lg);
  font-weight: 400;
  color: var(--mute);
  transition: transform 0.3s;
  flex-shrink: 0;
  margin-right: var(--space-sm);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 var(--space-xl) var(--space-xl);
  color: var(--mute);
  line-height: 1.8;
}

/* ========================================
   CTA STRIP
   ======================================== */
.cta-strip {
  background: var(--surface-dark);
  padding: var(--space-section) var(--space-xl);
  text-align: center;
}

.cta-strip h2 {
  font-size: var(--heading-xl);
  font-weight: 700;
  letter-spacing: -1.2px;
  color: var(--on-dark);
  margin-bottom: var(--space-md);
}

.cta-strip p {
  font-size: var(--body-md);
  color: var(--on-dark-mute);
  margin-bottom: var(--space-xxl);
}

.cta-strip .btn-primary {
  height: 48px;
  padding: 8px 32px;
  font-size: var(--body-md);
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: var(--space-xxl) var(--space-xl);
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-xxl);
}

.footer-brand img {
  height: 40px;
  margin-bottom: var(--space-lg);
}

.footer-brand p {
  font-size: var(--body-sm);
  color: var(--mute);
  line-height: 1.6;
  max-width: 280px;
}

.footer-col h4 {
  font-size: var(--body-sm);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--space-lg);
}

.footer-col a {
  display: block;
  font-size: var(--body-sm);
  color: var(--mute);
  padding: var(--space-xxs) 0;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--ink);
}

.footer-bottom {
  max-width: 1280px;
  margin: var(--space-xl) auto 0;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--hairline-soft);
  text-align: center;
  font-size: var(--caption-md);
  color: var(--mute);
}

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========================================
   RESPONSIVE
   ======================================== */

/* Tablet: 768px */
@media (max-width: 1024px) {
  :root {
    --display-xl: 56px;
    --display-lg: 36px;
    --space-section: 48px;
  }

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

  .feature-row {
    grid-template-columns: 1fr;
    gap: var(--space-xxl);
  }

  .feature-row.reverse .feature-media {
    order: 0;
  }

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

@media (max-width: 768px) {
  :root {
    --display-xl: 44px;
    --display-lg: 32px;
    --heading-xl: 24px;
    --space-section: 40px;
  }

  /* Nav mobile */
  .nav-links {
    display: none;
    position: fixed;
    top: 64px;
    right: 0;
    width: 100%;
    background: var(--canvas);
    flex-direction: column;
    padding: var(--space-xl);
    border-bottom: 1px solid var(--hairline);
    gap: var(--space-lg);
  }

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

  .nav-toggle {
    display: flex;
  }

  /* Hero */
  .hero {
    padding-top: calc(64px + var(--space-xxl));
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-xxl);
  }

  .hero-text p {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image img {
    max-width: 280px;
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  /* Pricing */
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .pricing-card.popular {
    transform: none;
  }

  .pricing-card.popular:hover {
    transform: translateY(-4px);
  }

  /* Testimonials */
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-brand p {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  :root {
    --display-xl: 36px;
    --display-lg: 28px;
    --space-section: 32px;
  }

  .primary-nav {
    padding: 0 var(--space-lg);
  }

  .section {
    padding: var(--space-section) var(--space-lg);
  }

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

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-buttons a {
    width: 100%;
    text-align: center;
  }
}