/* ===== IMPORTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@600;700;800&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
  /* Colors - Premium Palette */
  --color-primary: #6366F1;
  --color-primary-dark: #4F46E5;
  --color-secondary: #8B5CF6;
  --color-accent: #EC4899;
  --color-accent-warm: #F59E0B;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --gradient-accent: linear-gradient(135deg, #EC4899 0%, #F59E0B 100%);
  --gradient-dark: linear-gradient(180deg, #0F172A 0%, #1E293B 100%);

  /* Neutrals */
  --color-bg: #0A0E1A;
  --color-bg-secondary: #111827;
  --color-bg-tertiary: #1F2937;
  --color-surface: rgba(255, 255, 255, 0.05);
  --color-surface-hover: rgba(255, 255, 255, 0.08);

  --color-text: #F9FAFB;
  --color-text-secondary: #D1D5DB;
  --color-text-muted: #9CA3AF;

  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-hover: rgba(255, 255, 255, 0.2);

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-tooltip: 1050;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary);
}

/* ===== LAYOUT ===== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-sm {
  padding: var(--spacing-2xl) 0;
}

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 1280px;
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
  align-items: center;
}

.nav-link {
  color: var(--color-text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-text);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.nav-link:hover::after {
  width: 100%;
}

.lang-switcher {
  display: flex;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs);
  background: var(--color-surface);
  border-radius: var(--radius-md);
}

.lang-btn {
  padding: 0.375rem 0.75rem;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.lang-btn.active {
  background: var(--gradient-primary);
  color: white;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
}

/* ===== CARDS ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

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

.card-glass {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===== GRID ===== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.15), transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-title {
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, #fff 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  font-weight: 500;
}

.hero-stat {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-glow);
}

.hero-disclaimer {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
}

.hero-ctas {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

.hero-features {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-2xl);
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.hero-feature::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: 50%;
  font-weight: 700;
  color: white;
  font-size: 0.875rem;
}

/* ===== STATS/METRICS ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
}

.stat-card {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--card-glass);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.form-checkbox input {
  width: 20px;
  height: 20px;
  cursor: pointer;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.7;
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== UTILITIES ===== */
.text-center {
  text-align: center;
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

/* ===== RESPONSIVE ===== */
/* ===== CONTACT HEADER ===== */
.contact-header {
  padding-top: 120px;
  padding-bottom: var(--spacing-xl);
  text-align: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .section {
    padding: var(--spacing-xl) 0;
  }

  .card {
    padding: var(--spacing-md) !important;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .nav-container {
    padding: var(--spacing-sm);
  }

  /* Hamburger Button */
  .mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: var(--z-fixed);
    padding: 0;
  }

  .mobile-menu-btn span {
    width: 100%;
    height: 3px;
    background-color: var(--color-text);
    border-radius: 3px;
    transition: all 0.3s ease-in-out;
  }

  /* Hamburger Animation */
  .mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }

  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }

  /* Mobile Menu Container */
  .nav-menu {
    position: fixed;
    top: 60px;
    /* Adjust based on navbar height */
    left: 0;
    width: 100%;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-xl) 0;
    gap: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-150%);
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: var(--shadow-lg);
    visibility: hidden;
  }

  .nav-menu.active {
    transform: translateY(0);
    visibility: visible;
  }

  .nav-menu li {
    width: 100%;
    text-align: center;
  }

  .nav-link {
    font-size: 1.25rem;
    display: block;
    padding: 0.5rem 0;
  }

  .nav-logo {
    margin-bottom: var(--spacing-xs);
  }

  /* Adjust content padding for taller mobile nav (~200px+) */
  .hero {
    padding-top: 220px;
  }

  .contact-header {
    padding-top: 220px;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
    /* Ensure centering */
    width: 100%;
    /* Full width container */
  }

  .hero-ctas .btn {
    width: 100%;
    /* Full width buttons on mobile */
    max-width: 100%;
    white-space: normal;
    /* Allow text to wrap */
    text-align: center;
    height: auto;
    /* Allow height to grow with text */
    min-height: 50px;
  }

  .hero-features {
    flex-direction: column;
    align-items: center;
    /* Center align features on mobile too */
    text-align: left;
    /* Keep text left aligned for readability, or center if preferred */
    width: 100%;
  }

  .hero-feature {
    width: 100%;
    justify-content: center;
    /* Center the feature items */
  }

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

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .lang-btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.9rem;
  }
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ===== CASES PAGE / VIDEO PLAYER ===== */
.case-card {
  padding: 0;
  /* Override default card padding */
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 9/16;
  background: black;
  overflow: hidden;
  cursor: pointer;
}

.case-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 2;
}

/* Hover state for overlay */
.video-wrapper:hover .play-overlay {
  background: rgba(0, 0, 0, 0.4);
}

.play-button {
  width: 64px;
  height: 64px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: white;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  padding-left: 4px;
  /* Optical center for play icon */
}

.video-wrapper:hover .play-button {
  transform: scale(1.1);
  background: var(--gradient-primary);
  border-color: transparent;
}

/* Playing state */
.case-card.playing .play-overlay {
  opacity: 0;
  pointer-events: none;
}

.case-content {
  padding: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.case-category-badge {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.1);
  padding: 4px 8px;
  border-radius: 4px;
}

.case-title {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xs);
  line-height: 1.4;
}

.case-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}