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

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 240, 255, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 240, 255, 0.4);
}

/* Firefox */
html {
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 240, 255, 0.2) var(--bg-primary);
}

body {
  font-family: var(--font-body);
  font-weight: var(--fw-regular);
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  cursor: none;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* Section base */
.section {
  padding: var(--section-pad) 0;
  position: relative;
}

/* Mono label */
.label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.label--cyan { color: var(--accent-cyan); }
.label--orange { color: var(--accent-orange); }

/* Section heading */
.section-heading {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: var(--fw-bold);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* ---- NAVIGATION ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: 1.25rem 0;
  transition: background 0.4s var(--ease-out), backdrop-filter 0.4s var(--ease-out);
}

.nav.scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.3s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-cyan);
  transition: width 0.3s var(--ease-out);
}

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

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

/* Language switcher */
.nav-lang {
  display: flex;
  gap: 0.25rem;
  margin-left: 1.5rem;
}

.nav-lang-item {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 0.2rem 0.45rem;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: color 0.3s, border-color 0.3s;
}

.nav-lang-item:hover {
  color: var(--text-primary);
  border-color: var(--glass-border);
}

.nav-lang-item.active {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* Noise overlay */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-overlay);
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

/* ---- LOADER ---- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.loader-logo {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
}

.loader-c {
  color: var(--text-primary);
}

.loader-d {
  color: var(--accent-cyan);
}

.loader-cursor {
  display: inline-block;
  width: 3px;
  height: 0.8em;
  background: var(--accent-cyan);
  margin-left: 3px;
  animation: logo-blink 1s step-end infinite;
}

@keyframes logo-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.loader-bar {
  width: 120px;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 1px;
  overflow: hidden;
}

.loader-bar-fill {
  width: 0%;
  height: 100%;
  background: var(--accent-cyan);
  border-radius: 1px;
  animation: loader-fill 1.8s var(--ease-in-out) forwards;
}

@keyframes loader-fill {
  0% { width: 0%; }
  60% { width: 70%; }
  100% { width: 100%; }
}

/* Touch devices: show default cursor */
@media (pointer: coarse) {
  body {
    cursor: auto;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav-links {
    gap: 1.25rem;
  }

  .nav-links a {
    font-size: 0.7rem;
  }

  .nav-lang {
    margin-left: 0.75rem;
    gap: 0.15rem;
  }

  .nav-lang-item {
    font-size: 0.6rem;
    padding: 0.15rem 0.35rem;
  }
}