:root {
  /* Colors - Serious Enterprise Dark Mode */
  --color-bg-base: #050507;
  --color-bg-surface: #0a0a0f;
  --color-bg-glass: rgba(15, 15, 20, 0.4);
  --color-bg-glass-hover: rgba(25, 25, 30, 0.6);

  --color-text-primary: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;

  --color-accent-blue: #64748b;
  --color-accent-purple: #334155;
  --color-accent-glow: rgba(100, 116, 139, 0.1);

  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
  --gradient-text: linear-gradient(to right, #fff, #a1a1aa);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: 'Gilda Display', serif;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Radii */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 400;
  /* Adjusted from 700 */
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 4vw, 4rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  letter-spacing: -0.01em;
}

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

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

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

p {
  margin-bottom: var(--space-4);
}

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

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.section {
  padding: 8rem 0;
  /* Increased from 6rem */
}

.section-sm {
  padding: 5rem 0;
  /* Increased from 3rem */
}

.flex {
  display: flex;
}

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

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

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

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

.gap-2 {
  gap: var(--space-2);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-8 {
  gap: var(--space-8);
}

.gap-12 {
  gap: var(--space-12);
}

.grid {
  display: grid;
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 768px) {

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

/* Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 14px var(--color-accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.1);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.btn-outline:hover {
  border-color: var(--color-accent-blue);
  background: rgba(255, 255, 255, 0.05);
}

.glass-panel {
  background: var(--color-bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.glass-panel:hover {
  border-color: rgba(255, 255, 255, 0.25);
  background: var(--color-bg-glass-hover);
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(100, 116, 139, 0.2);
}

/* Header & Hamburger Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(5, 5, 7, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
}

/* Hamburger Button */
.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1002;
  margin: 0 auto;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.hamburger-line {
  width: 2rem;
  height: 0.2rem;
  background: var(--color-text-primary);
  border-radius: 10px;
  transition: all 0.3s linear;
  position: relative;
  transform-origin: 1px;
}

/* Hamburger Animation classes added via JS */
.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg);
}

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg);
}

/* Fullscreen Overlay Nav */
.fullscreen-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(5, 5, 7, 0.98);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.fullscreen-nav.hide-nav {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.nav-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.nav-links-col {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.nav-links-col .nav-link {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 300;
  /* Made slightly thinner */
  color: var(--color-text-secondary);
  transition: color var(--transition-normal);
  display: block;
}

.nav-links-col .nav-link:hover,
.nav-links-col .nav-link.active {
  color: var(--color-text-primary);
  transform: scale(1.05);
}

@media (max-width: 768px) {
  .nav-links-col .nav-link {
    font-size: 1.8rem;
  }

  .site-header .container>div:last-child,
  .desk-contact-btn {
    display: none;
  }

  .hamburger-btn {
    position: static;
    transform: none;
    margin: 0 0 0 auto;
  }
}

/* Footer */
.site-footer {
  margin-top: auto;
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-surface);
}

/* Utilities */
.text-center {
  text-align: center;
}

.mb-2 {
  margin-bottom: var(--space-2);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

.mb-6 {
  margin-bottom: var(--space-6);
}

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

.mb-12 {
  margin-bottom: var(--space-12);
}

.mb-16 {
  margin-bottom: var(--space-16);
}

.mt-2 {
  margin-top: var(--space-2);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mt-8 {
  margin-top: var(--space-8);
}

.mt-12 {
  margin-top: var(--space-12);
}

.mt-16 {
  margin-top: var(--space-16);
}

/* Input Elements */
.input-field {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.input-field:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  background: rgba(255, 255, 255, 0.08);
}

select.input-field {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1em;
}

select.input-field option {
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

.animate-fade-in {
  animation: fadeIn 0.8s var(--transition-slow) forwards;
}

.stagger-1 {
  animation-delay: 100ms;
}

.stagger-2 {
  animation-delay: 200ms;
}

.stagger-3 {
  animation-delay: 300ms;
}

/* Cookie Consent */
.cookie-banner {
  position: fixed;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  width: calc(100% - 2rem);
  max-width: 600px;
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-slow);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8), 0 0 20px rgba(100, 116, 139, 0.1);
}

.cookie-banner.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* Custom Toggle Switch for Cookies */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
}

.toggle-checkbox {
  display: none;
}

.toggle-label {
  display: block;
  overflow: hidden;
  cursor: pointer;
  border-radius: 9999px;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--color-border);
  height: 100%;
  width: 100%;
  transition: background-color var(--transition-normal);
  position: relative;
}

.toggle-label::before {
  content: "";
  display: block;
  width: 18px;
  height: 18px;
  background-color: var(--color-text-secondary);
  position: absolute;
  top: 2px;
  left: 2px;
  border-radius: 50%;
  transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.toggle-checkbox:checked + .toggle-label {
  background-color: var(--color-accent-blue);
  border-color: var(--color-accent-blue);
}

.toggle-checkbox:checked + .toggle-label::before {
  transform: translateX(20px);
  background-color: #fff;
}

.toggle-checkbox:disabled + .toggle-label {
  cursor: not-allowed;
  opacity: 0.6;
}