/* ==========================================================================
   SANDAR - Design System Premium
   Agence Web Suisse | sandar.ch
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@800&display=swap');

/* --------------------------------------------------------------------------
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Strict Palette */
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-accent: #EAB308;
  --color-accent-hover: #CA9A06;
  --color-accent-light: rgba(234, 179, 8, 0.1);
  --color-accent-glow: rgba(234, 179, 8, 0.3);

  /* Neutral Scale */
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #E5E5E5;
  --color-gray-300: #D4D4D4;
  --color-gray-400: #A3A3A3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Plus Jakarta Sans', var(--font-primary);

  /* Font Sizes - Fluid Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.925rem + 0.4vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3rem);
  --text-5xl: clamp(3rem, 2rem + 5vw, 4.5rem);
  --text-6xl: clamp(3.75rem, 2.5rem + 6.25vw, 6rem);

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

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;
  --leading-loose: 1.8;

  /* Letter Spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* 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;
  --space-40: 10rem;
  --space-48: 12rem;
  --space-64: 16rem;

  /* Container */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1440px;
  --container-padding: clamp(1.25rem, 5vw, 2.5rem);

  /* Border Radius - All set to 0 for sharp edges */
  --radius-sm: 0;
  --radius-md: 0;
  --radius-lg: 0;
  --radius-xl: 0;
  --radius-2xl: 0;
  --radius-full: 0;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-accent: 0 10px 40px -10px var(--color-accent-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-slower: 600ms ease;

  /* Z-Index Scale */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

/* --------------------------------------------------------------------------
   2. CSS RESET & BASE STYLES
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-feature-settings: "kern" 1, "liga" 1;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Remove default list styles */
ul, ol {
  list-style: none;
}

/* Images */
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Form elements */
input, button, textarea, select {
  font: inherit;
  color: inherit;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

/* Buttons */
button {
  cursor: pointer;
  background: none;
  border: none;
}

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

/* Selection */
::selection {
  background-color: var(--color-accent);
  color: var(--color-black);
}

/* --------------------------------------------------------------------------
   3. TYPOGRAPHY
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-black);
}

h1 {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  letter-spacing: var(--tracking-tighter);
}

h2 {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
}

h3 {
  font-size: var(--text-3xl);
}

h4 {
  font-size: var(--text-2xl);
}

h5 {
  font-size: var(--text-xl);
}

h6 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

p {
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
}

.lead {
  font-size: var(--text-xl);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
}

.text-small {
  font-size: var(--text-sm);
}

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

.text-muted {
  color: var(--color-gray-500);
}

/* --------------------------------------------------------------------------
   4. LAYOUT UTILITIES
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container-narrow {
  max-width: var(--container-lg);
}

.container-wide {
  max-width: var(--container-2xl);
}

.section {
  padding-block: var(--space-20);
}

.section-lg {
  padding-block: var(--space-24);
}

.section-sm {
  padding-block: var(--space-12);
}

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

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

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

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

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

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-10 { gap: var(--space-10); }
.gap-12 { gap: var(--space-12); }
.gap-16 { gap: var(--space-16); }

/* --------------------------------------------------------------------------
   5. COMPONENTS
   -------------------------------------------------------------------------- */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-black);
  border: 2px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: var(--shadow-accent);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-black);
  color: var(--color-white);
  border: 2px solid var(--color-black);
}

.btn-secondary:hover {
  background-color: var(--color-gray-800);
  border-color: var(--color-gray-800);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background-color: var(--color-black);
  color: var(--color-white);
}

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

.btn-outline-white:hover {
  background-color: var(--color-white);
  color: var(--color-black);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-black);
  border: 2px solid transparent;
  padding-inline: var(--space-4);
}

.btn-ghost:hover {
  color: var(--color-accent);
}

.btn-lg {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-base);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* --- Cards --- */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--color-gray-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-dark {
  background-color: var(--color-gray-900);
  border-color: var(--color-gray-800);
  color: var(--color-white);
}

.card-dark p {
  color: var(--color-gray-400);
}

.card-dark:hover {
  border-color: var(--color-accent);
}

.card-accent {
  border-color: var(--color-accent);
  background: linear-gradient(135deg, var(--color-accent-light) 0%, transparent 50%);
}

/* --- Tags / Badges --- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  border-radius: var(--radius-full);
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
}

.tag-accent {
  background-color: var(--color-accent);
  color: var(--color-black);
}

.tag-dark {
  background-color: var(--color-black);
  color: var(--color-white);
}

/* --- Dividers --- */
.divider {
  width: 100%;
  height: 1px;
  background-color: var(--color-gray-200);
}

.divider-accent {
  width: 60px;
  height: 4px;
  background-color: var(--color-accent);
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.section-header .tag {
  margin-bottom: var(--space-4);
}

.section-header h2 {
  margin-bottom: var(--space-6);
}

.section-header p {
  font-size: var(--text-lg);
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  padding-block: var(--space-4);
}

.breadcrumb a {
  color: var(--color-gray-500);
  transition: color var(--transition-fast);
}

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

.breadcrumb-separator {
  color: var(--color-gray-300);
}

.breadcrumb-current {
  color: var(--color-gray-900);
  font-weight: var(--font-medium);
}

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

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-700);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--text-base);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
  border-color: var(--color-gray-300);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-light);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-400);
}

/* --------------------------------------------------------------------------
   6. HEADER & NAVIGATION
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.header.scrolled {
  border-bottom-color: var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

@keyframes logo-dot-glow {
  0%, 100% {
    box-shadow: 0 0 0px transparent, 0 0 0px transparent;
  }
  50% {
    box-shadow: 0 0 6px rgba(234, 179, 8, 0.9), 0 0 18px rgba(234, 179, 8, 0.3);
  }
}

@keyframes logo-ripple {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.7;
  }
  100% {
    transform: translate(-50%, -50%) scale(3.8);
    opacity: 0;
  }
}

.logo {
  font-family: 'Montserrat', var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-black);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: letter-spacing var(--transition-base);
}

.logo:hover {
  letter-spacing: 0.26em;
}

.logo span {
  font-size: 0;
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--color-accent);
  border-radius: 50%;
  position: relative;
  vertical-align: baseline;
  margin-left: 0;
  animation: logo-dot-glow 2.8s ease-in-out infinite;
}

.logo span::before,
.logo span::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1.5px solid var(--color-accent);
  background: transparent;
  transform: translate(-50%, -50%) scale(1);
  animation: logo-ripple 2.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  pointer-events: none;
}

.logo span::after {
  animation-delay: 1.4s;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
  position: relative;
  padding: var(--space-2) 0;
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--color-black);
}

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

.nav-divider {
  width: 1px;
  height: 24px;
  background-color: var(--color-gray-200);
  margin-left: var(--space-2);
}

.nav-cta {
  margin-left: var(--space-2);
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-xs);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  position: relative;
  z-index: calc(var(--z-tooltip) + 200);
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-black);
  transition: all var(--transition-base);
  transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-tooltip) + 50);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Mobile Nav Sidebar */
.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 320px;
  max-width: 85vw;
  background-color: var(--color-white);
  z-index: calc(var(--z-tooltip) + 100);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

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

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  min-height: 72px;
  border-bottom: 1px solid var(--color-gray-100);
}

.mobile-nav-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-gray-700);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: 8px;
}

.mobile-nav-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-black);
}

.mobile-nav-content {
  flex: 1;
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav-link {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-gray-700);
  padding: var(--space-4) var(--space-4);
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--color-black);
  background-color: var(--color-gray-50);
  border-left-color: var(--color-accent);
}

.mobile-nav-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--color-gray-100);
}

.mobile-nav-footer .btn {
  width: 100%;
  justify-content: center;
}

/* Body lock when menu is open */
body.menu-open {
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   7. FOOTER
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--color-black);
  color: var(--color-white);
  padding-top: var(--space-24);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-16);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--color-gray-800);
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .logo {
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.footer-brand p {
  color: var(--color-gray-400);
  margin-bottom: var(--space-6);
}

.footer-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  color: var(--color-gray-400);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-8);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.footer-legal {
  display: flex;
  gap: var(--space-6);
}

.footer-legal a {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--color-white);
}

/* Social Links */
.social-links {
  display: flex;
  gap: var(--space-4);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-gray-700);
  border-radius: var(--radius-md);
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
}

.social-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   8. HERO SECTION
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background-color: var(--color-white);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  justify-content: center;
  width: 100%;
}

.hero-tag .tag {
  background-color: var(--color-black);
  color: var(--color-white);
}

.hero-title {
  margin-bottom: var(--space-8);
}

.hero-title .highlight {
  position: relative;
  color: var(--color-black);
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: 0.1em;
  left: 0;
  right: 0;
  height: 0.3em;
  background-color: var(--color-accent);
  z-index: -1;
  transform: skewX(-3deg);
}

.hero-description {
  font-size: var(--text-xl);
  color: var(--color-gray-600);
  margin-bottom: var(--space-10);
  max-width: 560px;
  margin-inline: auto;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

.hero-visual {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  width: 50%;
  height: 80%;
  z-index: 1;
}

.hero-decoration {
  position: absolute;
  top: 50%;
  right: 5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-accent-light) 0%, transparent 70%);
  border-radius: 0;
  transform: translateY(-50%);
  z-index: 0;
}

/* --------------------------------------------------------------------------
   9. RESPONSIVE BREAKPOINTS
   -------------------------------------------------------------------------- */
@media (max-width: 1280px) {
  .footer-grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: var(--space-10);
  }
}

@media (max-width: 1024px) {
  .nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-visual {
    display: none;
  }

  .hero-content {
    max-width: 100%;
    text-align: center;
  }

  .hero-description {
    max-width: 100%;
    margin-inline: auto;
  }

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

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-12);
  }

  .footer-brand {
    grid-column: span 2;
    max-width: 100%;
  }

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

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

@media (max-width: 768px) {
  .section {
    padding-block: var(--space-12);
  }

  .section-lg {
    padding-block: var(--space-16);
  }

  .hero {
    min-height: auto;
    padding-top: 120px;
    padding-bottom: var(--space-16);
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .footer-brand {
    grid-column: span 1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .section-header {
    margin-bottom: var(--space-8);
  }
}

@media (max-width: 480px) {
  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

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

  .header-inner {
    height: 70px;
  }
}

/* --------------------------------------------------------------------------
   BACK TO TOP
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-black);
  color: var(--color-white);
  border: none;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base), background-color var(--transition-fast), color var(--transition-fast);
  z-index: 100;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-accent);
  color: var(--color-black);
}

/* --------------------------------------------------------------------------
   10. UTILITY CLASSES
   -------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mx-auto { margin-inline: auto; }
.mt-auto { margin-top: auto; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.relative { position: relative; }
.absolute { position: absolute; }

.overflow-hidden { overflow: hidden; }

.bg-white { background-color: var(--color-white); }
.bg-black { background-color: var(--color-black); }
.bg-gray { background-color: var(--color-gray-50); }
.bg-accent { background-color: var(--color-accent); }

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fadeIn {
  animation: fadeIn 0.4s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }