/* ==========================================================================
   Invensis Website - Modern CSS (2026)
   Using latest CSS innovations: Container Queries, View Transitions,
   Scroll-Driven Animations, CSS Nesting, :has(), and more
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --color-primary: #2294D7;
  --color-primary-dark: #085FA4;
  --color-primary-light: #4AB3F4;
  --color-highlight: #C93848;
  --color-highlight-dark: #A12838;

  /* Background Colors */
  --color-deep-bg: #17173D;
  --color-deep-bg-lighter: #1e1e4a;
  --color-deep-bg-light: #2a2a5a;

  /* Neutral Colors */
  --color-white: #ffffff;
  --color-slate-50: #f8fafc;
  --color-slate-100: #f1f5f9;
  --color-slate-200: #e2e8f0;
  --color-slate-300: #cbd5e1;
  --color-slate-400: #94a3b8;
  --color-slate-500: #64748b;
  --color-slate-600: #475569;
  --color-slate-700: #334155;
  --color-slate-800: #1e293b;
  --color-slate-900: #0f172a;
  --color-slate-custom: #0f172a;

  /* Typography */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;

  /* Font Weights */
  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  --font-black: 900;

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-primary: 0 20px 40px -10px rgba(34, 148, 215, 0.4);
  --shadow-highlight: 0 20px 40px -10px rgba(201, 56, 72, 0.3);

  /* Transitions - Apple-like Smooth */
  --ease-apple: cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 700ms;
  --duration-slowest: 1000ms;

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 50;
  --z-fixed: 100;
  --z-modal: 200;
  --z-tooltip: 300;

  /* Container */
  --container-max: 80rem;
  --container-padding: 1.5rem;
}

/* Dark mode adjustments */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: var(--color-deep-bg);
  }
}

/* --------------------------------------------------------------------------
   View Transitions API - Apple-like Page Transitions
   -------------------------------------------------------------------------- */
@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: fade-out var(--duration-slow) var(--ease-apple);
}

::view-transition-new(root) {
  animation: fade-in var(--duration-slow) var(--ease-apple);
}

/* Named transitions for specific elements */
::view-transition-old(hero-content),
::view-transition-new(hero-content) {
  animation-duration: var(--duration-slower);
}

::view-transition-old(nav-logo) {
  animation: slide-out-left var(--duration-normal) var(--ease-apple);
}

::view-transition-new(nav-logo) {
  animation: slide-in-left var(--duration-normal) var(--ease-apple);
}

@keyframes fade-out {
  from { opacity: 1; transform: scale(1); }
  to { opacity: 0; transform: scale(0.98); }
}

@keyframes fade-in {
  from { opacity: 0; transform: scale(1.02); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slide-out-left {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(-20px); }
}

@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

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

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

  /* Scroll-driven animation timeline */
  scroll-timeline: --page-scroll block;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-slate-custom);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Focus styles */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* --------------------------------------------------------------------------
   Navigation - Sticky with Backdrop Blur
   -------------------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  width: 100%;
  height: 5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(23, 23, 61, 0.95);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  transition: all var(--duration-normal) var(--ease-apple);
  view-transition-name: nav;

  &.scrolled {
    background: rgba(23, 23, 61, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  }

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

  .nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    view-transition-name: nav-logo;

    .logo-icon {
      width: 2.5rem;
      height: 2.5rem;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-lg);
      background: rgba(34, 148, 215, 0.2);
      color: var(--color-primary);
      transition: all var(--duration-normal) var(--ease-apple);
    }

    .logo-text {
      font-size: 1.25rem;
      font-weight: var(--font-bold);
      color: var(--color-white);
      letter-spacing: -0.025em;
    }

    &:hover .logo-icon {
      background: rgba(34, 148, 215, 0.3);
      transform: scale(1.05);
    }
  }

  .nav-links {
    display: none;
    align-items: center;
    gap: var(--space-8);

    @media (min-width: 768px) {
      display: flex;
    }

    a {
      position: relative;
      font-size: 0.875rem;
      font-weight: var(--font-medium);
      color: var(--color-slate-300);
      text-decoration: none;
      padding: var(--space-2) 0;
      transition: color var(--duration-fast) var(--ease-apple);

      &::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--color-primary);
        transition: width var(--duration-normal) var(--ease-apple);
      }

      &:hover, &.active {
        color: var(--color-white);

        &::after {
          width: 100%;
        }
      }

      &.active {
        color: var(--color-primary);
      }
    }
  }

  .nav-cta {
    display: none;

    @media (min-width: 768px) {
      display: block;
    }
  }

  .nav-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    color: var(--color-white);
    cursor: pointer;

    @media (min-width: 768px) {
      display: none;
    }
  }
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: 5rem;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-deep-bg);
  z-index: calc(var(--z-fixed) - 1);
  padding: var(--space-6);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-apple);

  &.open {
    transform: translateX(0);
  }

  a {
    display: block;
    padding: var(--space-4) 0;
    font-size: 1.125rem;
    font-weight: var(--font-medium);
    color: var(--color-white);
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: var(--font-bold);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-apple);

  &:active {
    transform: scale(0.98);
  }
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-primary);

  &:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 25px 50px -10px rgba(34, 148, 215, 0.5);
  }
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);

  &:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
  }
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);

  &:hover {
    background: var(--color-primary);
    color: var(--color-white);
  }
}

.btn-large {
  padding: var(--space-4) var(--space-10);
  font-size: 1rem;
  border-radius: var(--radius-xl);
}

/* --------------------------------------------------------------------------
   Hero Section - Split Layout & Slider
   -------------------------------------------------------------------------- */
.hero,
.hero-slider {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh; /* Dynamic viewport height for mobile */
  display: block;
  overflow: visible;
  background: var(--color-deep-bg);
  view-transition-name: hero;
}

.hero {

  /* Left side - Content */
  .hero-content {
    position: relative;
    z-index: 20;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(var(--space-24) + 80px) var(--container-padding) var(--space-16);
    background: transparent;
    width: 100%;

    @media (min-width: 768px) {
      padding: calc(var(--space-32) + 80px) var(--space-16) var(--space-20);
    }

    @media (min-width: 1024px) {
      padding: 0 var(--space-16) 0 max(calc((100vw - var(--container-max)) / 2 + var(--container-padding)), var(--space-12));
      min-height: 100vh;
      min-height: 100dvh;
      width: 55%;
    }

    @media (min-width: 1280px) {
      padding-right: var(--space-20);
    }

    .hero-inner {
      max-width: 40rem;
    }
  }

  /* Right side - Image or Sphere */
  .hero-image {
    position: relative;
    min-height: 50vh;
    overflow: visible;
    background: transparent;

    @media (min-width: 1024px) {
      min-height: 100vh;
      min-height: 100dvh;
      overflow: visible;
    }
  }

  /* Sphere container is absolutely positioned via page styles */
  .hero-sphere-container {
    overflow: visible;
    background: transparent;
  }

  .hero-image {
    .hero-image-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      transform: scale(1.05);
      transition: transform 10s var(--ease-apple);
    }

    &:hover .hero-image-bg {
      transform: scale(1);
    }

    /* Overlay gradient for text readability on mobile */
    &::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, var(--color-deep-bg), transparent 50%);
      opacity: 0.6;

      @media (min-width: 1024px) {
        background: linear-gradient(to right, var(--color-deep-bg), transparent 30%);
        opacity: 0.8;
      }
    }
  }

  /* Parallel lines overlay */
  .parallel-lines {
    z-index: 5;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-6);
    font-size: 0.75rem;
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    background: rgba(34, 148, 215, 0.1);
    border: 1px solid rgba(34, 148, 215, 0.3);
    border-radius: var(--radius-full);
    backdrop-filter: blur(10px);
    width: fit-content;

    .badge-dot {
      position: relative;
      width: 0.5rem;
      height: 0.5rem;

      &::before {
        content: '';
        position: absolute;
        inset: 0;
        background: var(--color-primary);
        border-radius: var(--radius-full);
        animation: ping 1.5s infinite;
      }

      &::after {
        content: '';
        position: absolute;
        inset: 0;
        background: var(--color-primary);
        border-radius: var(--radius-full);
      }
    }
  }

  .hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 6vw, 4.5rem);
    font-weight: var(--font-black);
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--color-white);

    @media (min-width: 1024px) {
      font-size: clamp(3rem, 4.5vw, 5rem);
    }

    .gradient-text {
      display: block;
      margin-top: var(--space-2);
      background: linear-gradient(135deg, var(--color-primary), #5ECFFF, var(--color-primary-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      background-size: 200% 200%;
      animation: gradient-shift 8s ease infinite;
    }
  }

  .hero-description {
    margin-top: var(--space-6);
    max-width: 32rem;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-slate-300);

    @media (min-width: 768px) {
      font-size: 1.125rem;
      margin-top: var(--space-8);
    }
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-8);

    @media (min-width: 768px) {
      margin-top: var(--space-10);
    }
  }
}

/* Gradient animation for hero text */
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* Ping animation for badge dot */
@keyframes ping {
  75%, 100% {
    transform: scale(2);
    opacity: 0;
  }
}

/* --------------------------------------------------------------------------
   Parallel Lines SVG Background
   -------------------------------------------------------------------------- */
.parallel-lines {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;

  svg {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0.15;
  }
}

/* --------------------------------------------------------------------------
   Sections - Common Styles with Proper Viewport Heights
   -------------------------------------------------------------------------- */
.section {
  position: relative;
  overflow: hidden;
  padding: var(--space-16) 0;
  min-height: auto;

  @media (min-width: 768px) {
    padding: var(--space-20) 0;
  }

  @media (min-width: 1024px) {
    padding: var(--space-24) 0;
  }

  /* Full viewport sections */
  &.section-full {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
  }

  /* Large sections (80vh) */
  &.section-large {
    @media (min-width: 1024px) {
      min-height: 80vh;
      display: flex;
      align-items: center;
    }
  }

  &.section-dark {
    background: var(--color-deep-bg);
    color: var(--color-white);
  }

  &.section-light {
    background: var(--color-white);
    color: var(--color-slate-custom);
  }

  &.section-gray {
    background: var(--color-slate-50);
    color: var(--color-slate-custom);
  }
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  position: relative;
  z-index: 20;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);

  &.text-left {
    text-align: left;
  }
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: var(--font-bold);
  letter-spacing: -0.02em;

  .section-dark & {
    color: var(--color-white);
  }

  .section-light &,
  .section-gray & {
    color: var(--color-slate-custom);
  }
}

.section-subtitle {
  margin-top: var(--space-4);
  font-size: 1.125rem;
  line-height: 1.75;
  max-width: 40rem;
  margin-left: auto;
  margin-right: auto;

  .section-dark & {
    color: var(--color-slate-400);
  }

  .section-light &,
  .section-gray & {
    color: var(--color-slate-500);
  }

  .text-left & {
    margin-left: 0;
    margin-right: 0;
  }
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-slate-100);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-spring);

  &:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);

    .card-image img {
      transform: scale(1.05);
    }
  }

  .card-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;

    img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform var(--duration-slow) var(--ease-apple);
    }

    .card-badge {
      position: absolute;
      top: var(--space-4);
      left: var(--space-4);
      padding: var(--space-1) var(--space-3);
      font-size: 0.75rem;
      font-weight: var(--font-bold);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--color-white);
      background: var(--color-primary);
      border-radius: var(--radius-full);
    }
  }

  .card-content {
    padding: var(--space-8);
  }

  .card-title {
    font-size: 1.25rem;
    font-weight: var(--font-bold);
    color: var(--color-slate-custom);
    transition: color var(--duration-fast) var(--ease-apple);
  }

  &:hover .card-title {
    color: var(--color-primary);
  }

  .card-description {
    margin-top: var(--space-3);
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-slate-500);
  }

  .card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-6);
    font-weight: var(--font-bold);
    color: var(--color-primary);
    text-decoration: none;

    .material-symbols-outlined {
      font-size: 1rem;
      transition: transform var(--duration-fast) var(--ease-apple);
    }

    &:hover .material-symbols-outlined {
      transform: translateX(4px);
    }
  }
}

/* Dark cards for dark sections */
.card-dark {
  background: var(--color-deep-bg-lighter);
  border-color: rgba(255, 255, 255, 0.05);

  .card-title {
    color: var(--color-white);
  }

  .card-description {
    color: var(--color-slate-400);
  }

  &:hover {
    border-color: rgba(34, 148, 215, 0.3);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  }
}

/* --------------------------------------------------------------------------
   Grid Layouts
   -------------------------------------------------------------------------- */
.grid {
  display: grid;
  gap: var(--space-8);

  &.grid-2 {
    @media (min-width: 768px) {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  &.grid-3 {
    @media (min-width: 768px) {
      grid-template-columns: repeat(2, 1fr);
    }

    @media (min-width: 1024px) {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  &.grid-4 {
    grid-template-columns: repeat(2, 1fr);

    @media (min-width: 768px) {
      grid-template-columns: repeat(4, 1fr);
    }
  }
}

/* --------------------------------------------------------------------------
   Stats Section
   -------------------------------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-12);
  text-align: center;

  @media (min-width: 1024px) {
    grid-template-columns: repeat(3, 1fr);
  }

  .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
  }

  .stat-label {
    font-size: 0.875rem;
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-slate-400);
  }

  .stat-value {
    font-size: clamp(3rem, 8vw, 4rem);
    font-weight: var(--font-black);
    letter-spacing: -0.02em;
    color: var(--color-slate-custom);
  }

  .stat-bar {
    width: 4rem;
    height: 0.375rem;
    background: var(--color-primary);
    border-radius: var(--radius-full);

    &.highlight {
      background: var(--color-highlight);
    }
  }
}

/* --------------------------------------------------------------------------
   Timeline
   -------------------------------------------------------------------------- */
.timeline {
  position: relative;

  &::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 3rem;
    height: 1px;
    background: var(--color-slate-200);

    @media (max-width: 767px) {
      display: none;
    }
  }

  .timeline-items {
    display: grid;
    gap: var(--space-12);

    @media (min-width: 768px) {
      grid-template-columns: repeat(4, 1fr);
      gap: var(--space-8);
    }
  }

  .timeline-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;

    .timeline-icon {
      position: relative;
      z-index: 10;
      width: 5rem;
      height: 5rem;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--color-slate-50);
      border: 4px solid var(--color-white);
      border-radius: var(--radius-2xl);
      color: var(--color-slate-400);
      box-shadow: var(--shadow-sm);
      transition: all var(--duration-normal) var(--ease-spring);

      .material-symbols-outlined {
        font-size: 2rem;
      }
    }

    &:hover .timeline-icon {
      background: var(--color-primary);
      color: var(--color-white);
      transform: translateY(-4px);
      box-shadow: var(--shadow-xl);
    }

    &.active .timeline-icon {
      background: var(--color-primary);
      color: var(--color-white);
      box-shadow: var(--shadow-primary), 0 0 0 4px rgba(34, 148, 215, 0.1);
    }

    .timeline-content {
      padding-top: var(--space-6);
    }

    .timeline-year {
      font-size: 0.75rem;
      font-weight: var(--font-bold);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--color-primary);
      margin-bottom: var(--space-2);
    }

    &.active .timeline-year {
      color: var(--color-highlight);
    }

    .timeline-title {
      font-size: 1.25rem;
      font-weight: var(--font-bold);
      color: var(--color-slate-custom);
      transition: color var(--duration-fast) var(--ease-apple);
    }

    &:hover .timeline-title {
      color: var(--color-primary);
    }

    &.active .timeline-title {
      color: var(--color-primary);
    }

    .timeline-description {
      margin-top: var(--space-2);
      font-size: 0.875rem;
      color: var(--color-slate-500);
    }
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--color-white);
  border-top: 1px solid var(--color-slate-100);
  padding-top: var(--space-24);
  padding-bottom: var(--space-12);
  position: relative;
  overflow: hidden;

  .footer-grid {
    display: grid;
    gap: var(--space-12);
    margin-bottom: var(--space-20);

    @media (min-width: 768px) {
      grid-template-columns: 2fr repeat(3, 1fr);
    }

    @media (min-width: 1024px) {
      grid-template-columns: 2fr repeat(4, 1fr);
    }
  }

  .footer-brand {
    .footer-logo {
      display: flex;
      align-items: center;
      gap: var(--space-3);
      margin-bottom: var(--space-8);

      .logo-icon {
        width: 3rem;
        height: 3rem;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(34, 148, 215, 0.1);
        border-radius: var(--radius-xl);
        color: var(--color-primary);
      }

      .logo-text {
        font-size: 1.5rem;
        font-weight: var(--font-bold);
        color: var(--color-slate-custom);
      }
    }

    .footer-description {
      max-width: 24rem;
      font-size: 1rem;
      line-height: 1.75;
      color: var(--color-slate-500);
      margin-bottom: var(--space-8);
    }

    .footer-social {
      display: flex;
      gap: var(--space-4);

      a {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 2.5rem;
        height: 2.5rem;
        background: var(--color-slate-50);
        border-radius: var(--radius-lg);
        color: var(--color-slate-400);
        transition: all var(--duration-fast) var(--ease-apple);

        &:hover {
          background: var(--color-primary);
          color: var(--color-white);
        }

        svg {
          width: 1.25rem;
          height: 1.25rem;
        }
      }
    }
  }

  .footer-links {
    h4 {
      font-size: 0.875rem;
      font-weight: var(--font-bold);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--color-slate-custom);
      margin-bottom: var(--space-8);
    }

    ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: var(--space-4);
    }

    a {
      font-size: 0.875rem;
      color: var(--color-slate-500);
      text-decoration: none;
      transition: color var(--duration-fast) var(--ease-apple);

      &:hover {
        color: var(--color-primary);
      }
    }
  }

  .footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    padding-top: var(--space-12);
    border-top: 1px solid var(--color-slate-100);

    @media (min-width: 768px) {
      flex-direction: row;
      justify-content: space-between;
      align-items: center;
    }

    .footer-copyright {
      font-size: 0.75rem;
      color: var(--color-slate-400);
    }

    .footer-legal {
      display: flex;
      gap: var(--space-8);

      a {
        font-size: 0.75rem;
        font-weight: var(--font-medium);
        color: var(--color-slate-400);
        text-decoration: none;
        transition: color var(--duration-fast) var(--ease-apple);

        &:hover {
          color: var(--color-slate-custom);
        }
      }
    }
  }
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.cta-section {
  position: relative;
  padding: var(--space-32) 0;
  background: var(--color-deep-bg);
  text-align: center;

  .cta-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.2;
    background-size: cover;
    background-position: center;
  }

  .cta-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(to bottom, var(--color-deep-bg), rgba(23, 23, 61, 0.8), var(--color-deep-bg));
  }

  .cta-content {
    position: relative;
    z-index: 20;
    max-width: 40rem;
    margin: 0 auto;
  }

  .cta-title {
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: var(--font-bold);
    color: var(--color-white);
    letter-spacing: -0.02em;
  }

  .cta-description {
    margin-top: var(--space-8);
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--color-slate-300);
  }

  .cta-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    margin-top: var(--space-12);

    @media (min-width: 640px) {
      flex-direction: row;
      justify-content: center;
    }
  }
}

/* --------------------------------------------------------------------------
   Scroll-Driven Animations
   -------------------------------------------------------------------------- */
@supports (animation-timeline: scroll()) {
  .fade-in-up {
    animation: fadeInUp linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 30%;
  }

  .fade-in-left {
    animation: fadeInLeft linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 30%;
  }

  .fade-in-right {
    animation: fadeInRight linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 30%;
  }

  .scale-in {
    animation: scaleIn linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 30%;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Fallback for browsers without scroll-driven animations */
@supports not (animation-timeline: scroll()) {
  .fade-in-up,
  .fade-in-left,
  .fade-in-right,
  .scale-in {
    opacity: 0;
    transition: opacity var(--duration-slow) var(--ease-apple),
                transform var(--duration-slow) var(--ease-apple);
  }

  .fade-in-up { transform: translateY(50px); }
  .fade-in-left { transform: translateX(-50px); }
  .fade-in-right { transform: translateX(50px); }
  .scale-in { transform: scale(0.9); }

  .fade-in-up.in-view,
  .fade-in-left.in-view,
  .fade-in-right.in-view,
  .scale-in.in-view {
    opacity: 1;
    transform: translate(0) scale(1);
  }
}

/* --------------------------------------------------------------------------
   Form Styles
   -------------------------------------------------------------------------- */
.form {
  .form-group {
    margin-bottom: var(--space-6);
  }

  .form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: var(--font-semibold);
    color: var(--color-slate-700);
    margin-bottom: var(--space-1);
  }

  .form-input,
  .form-textarea,
  .form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: 0.875rem;
    font-family: var(--font-body);
    color: var(--color-slate-900);
    background: var(--color-slate-50);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    box-shadow: inset 0 0 0 1px var(--color-slate-200);
    transition: all var(--duration-fast) var(--ease-apple);

    &::placeholder {
      color: var(--color-slate-400);
    }

    &:focus {
      outline: none;
      background: var(--color-white);
      box-shadow: inset 0 0 0 2px var(--color-primary);
    }
  }

  .form-textarea {
    resize: vertical;
    min-height: 8rem;
  }
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-highlight { color: var(--color-highlight); }
.text-white { color: var(--color-white); }
.text-muted { color: var(--color-slate-500); }

.bg-primary { background-color: var(--color-primary); }
.bg-dark { background-color: var(--color-deep-bg); }
.bg-light { background-color: var(--color-white); }
.bg-gray { background-color: var(--color-slate-50); }

.hidden { display: none; }

@media (min-width: 768px) {
  .md\:flex { display: flex; }
  .md\:hidden { display: none; }
  .md\:grid { display: grid; }
}

@media (min-width: 1024px) {
  .lg\:flex { display: flex; }
  .lg\:hidden { display: none; }
  .lg\:grid { display: grid; }
}

/* --------------------------------------------------------------------------
   Icon Styles (Material Symbols)
   -------------------------------------------------------------------------- */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'liga';
}

/* --------------------------------------------------------------------------
   Loading & Page Transition States
   -------------------------------------------------------------------------- */
.page-loading {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-deep-bg);
  opacity: 1;
  transition: opacity var(--duration-slow) var(--ease-apple);

  &.loaded {
    opacity: 0;
    pointer-events: none;
  }

  .loader {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(34, 148, 215, 0.2);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
  }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}