/* ═══════════════════════════════════════════════════
   GIGGLEZEN — CRITICAL CSS (Inline above the fold)
   ═══════════════════════════════════════════════════ */

:root {
  --gz-void:          #0A0A0F;
  --gz-obsidian:      #12121A;
  --gz-charcoal:      #1A1A2E;
  --gz-graphite:      #2A2A3E;
  --gz-cyan:          #00F0FF;
  --gz-violet:        #7B2FFF;
  --gz-magenta:       #FF2DAA;
  --gz-gold:          #FFD700;
  --gz-grad-hero:     linear-gradient(135deg, #00F0FF 0%, #7B2FFF 50%, #FF2DAA 100%);
  --gz-grad-text:     linear-gradient(90deg, #00F0FF, #7B2FFF);
  --gz-grad-card:     linear-gradient(145deg, rgba(0,240,255,0.05), rgba(123,47,255,0.05));
  --gz-grad-glow:     radial-gradient(ellipse at center, rgba(0,240,255,0.15) 0%, transparent 70%);
  --gz-grad-aurora:   linear-gradient(135deg, #00F0FF 0%, #7B2FFF 25%, #FF2DAA 50%, #FFD700 75%, #00F0FF 100%);
  --gz-text-primary:  #EEEEF0;
  --gz-text-secondary:#8888A0;
  --gz-text-muted:    #55556A;
  --gz-glass-bg:      rgba(18, 18, 26, 0.7);
  --gz-glass-border:  rgba(255, 255, 255, 0.08);
  --gz-glass-blur:    blur(20px);
  --gz-shadow-sm:     0 2px 8px rgba(0,0,0,0.3);
  --gz-shadow-md:     0 8px 32px rgba(0,0,0,0.4);
  --gz-shadow-lg:     0 16px 64px rgba(0,0,0,0.5);
  --gz-shadow-glow:   0 0 40px rgba(0,240,255,0.2);
  --gz-shadow-violet: 0 0 40px rgba(123,47,255,0.2);
  --font-display:     'Clash Display', 'Segoe UI', sans-serif;
  --font-heading:     'Satoshi', 'Segoe UI', sans-serif;
  --font-body:        'Switzer', 'Segoe UI', sans-serif;
  --font-mono:        'JetBrains Mono', 'Fira Code', monospace;
  --fs-hero:    clamp(3.5rem, 8vw + 1rem, 9rem);
  --fs-display: clamp(2.5rem, 5vw + 1rem, 6rem);
  --fs-h1:      clamp(2rem, 4vw + 0.5rem, 4rem);
  --fs-h2:      clamp(1.5rem, 3vw + 0.5rem, 3rem);
  --fs-h3:      clamp(1.25rem, 2vw + 0.5rem, 2rem);
  --fs-h4:      clamp(1.1rem, 1.5vw + 0.5rem, 1.5rem);
  --fs-body:    clamp(1rem, 1vw + 0.5rem, 1.125rem);
  --fs-small:   clamp(0.875rem, 0.8vw + 0.4rem, 1rem);
  --fs-tiny:    clamp(0.75rem, 0.6vw + 0.3rem, 0.875rem);
  --space-xs:   clamp(0.5rem, 1vw, 0.75rem);
  --space-sm:   clamp(0.75rem, 2vw, 1.25rem);
  --space-md:   clamp(1.5rem, 3vw, 2.5rem);
  --space-lg:   clamp(3rem, 6vw, 5rem);
  --space-xl:   clamp(5rem, 10vw, 8rem);
  --space-2xl:  clamp(8rem, 15vw, 12rem);
  --ease-out-expo:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart:   cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out-quart:cubic-bezier(0.76, 0, 0.24, 1);
  --ease-elastic:     cubic-bezier(0.68, -0.55, 0.27, 1.55);
  --ease-smooth:      cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  32px;
  --radius-full:9999px;
  --z-base:     1;
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-overlay:  300;
  --z-modal:    400;
  --z-toast:    500;
  --z-cursor:   9999;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  color: var(--gz-text-primary);
  background-color: var(--gz-void);
  line-height: 1.6;
  overflow-x: hidden;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

/* Smooth transitions for all interactive elements */
a, button, .gz-btn, .nav-link, .service-card, .glass-card, .tech-item {
  -webkit-tap-highlight-color: transparent;
}

/* Performance hints — conservative, no layout breakage */
.scroll-progress, .chapter-nav {
  will-change: transform;
}
.preloader {
  will-change: opacity;
}

/* Preloader - must be in critical CSS */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gz-void);
  animation: preloaderFallback 4s ease forwards;
}
/* CSS fallback: auto-hide preloader after 4s even if JS fails */
@keyframes preloaderFallback {
  0%, 90% { opacity: 1; visibility: visible; }
  100% { opacity: 0; visibility: hidden; pointer-events: none; }
}
/* When JS loads successfully, it adds .loaded to body which hides preloader instantly */
body.loaded .preloader { display: none !important; animation: none; }
.preloader__inner {
  text-align: center;
  z-index: 2;
}
.preloader__logo, .preloader__logo-wrap {
  margin-bottom: 2rem;
}
.preloader__counter {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  background: var(--gz-grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.preloader__bar {
  width: 200px;
  height: 2px;
  background: var(--gz-graphite);
  margin: 1rem auto;
  border-radius: var(--radius-full);
  overflow: hidden;
}
.preloader__bar-fill {
  height: 100%;
  width: 0;
  background: var(--gz-grad-hero);
  border-radius: var(--radius-full);
}
.preloader__text {
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  color: var(--gz-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 1rem;
}
.preloader__panel {
  position: absolute;
  top: 0;
  width: 50%;
  height: 100%;
  background: var(--gz-void);
  z-index: 1;
}
.preloader__panel--left { left: 0; }
.preloader__panel--right { right: 0; }

/* Nav critical styles */
.gz-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-sticky);
  transition: all 0.4s var(--ease-out-expo);
}
.gz-nav .navbar {
  padding: 1rem 0;
}
.gz-nav.scrolled {
  background: var(--gz-glass-bg);
  backdrop-filter: var(--gz-glass-blur);
  -webkit-backdrop-filter: var(--gz-glass-blur);
  border-bottom: 1px solid var(--gz-glass-border);
  box-shadow: var(--gz-shadow-md);
}
.gz-nav.scrolled .navbar {
  padding: 0.5rem 0;
}
.gz-nav .nav-link {
  color: var(--gz-text-primary);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: var(--fs-small);
  padding: 0.5rem 1rem !important;
  transition: color 0.3s;
  letter-spacing: 0.02em;
}
.gz-nav .nav-link:hover,
.gz-nav .nav-link.active {
  color: var(--gz-cyan);
}
.gz-nav .nav-logo {
  transition: all 0.4s var(--ease-out-expo);
}

/* Sound Toggle */
.sound-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--gz-graphite);
  border-radius: 50%;
  color: var(--gz-text-secondary);
  cursor: pointer;
  transition: all 0.3s;
  font-size: 0.85rem;
  padding: 0;
}
.sound-toggle:hover {
  color: var(--gz-cyan);
  border-color: var(--gz-cyan);
  background: rgba(0,240,255,0.05);
}

/* Hamburger */
.hamburger {
  width: 30px;
  height: 20px;
  position: relative;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--gz-text-primary);
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}
.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 0; }
.navbar-toggler { border: none; padding: 0; }
.navbar-toggler:focus { box-shadow: none; }

/* Dropdown Glass */
.glass-dropdown {
  background: var(--gz-glass-bg);
  backdrop-filter: var(--gz-glass-blur);
  -webkit-backdrop-filter: var(--gz-glass-blur);
  border: 1px solid var(--gz-glass-border);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  box-shadow: var(--gz-shadow-lg);
}
.glass-dropdown .dropdown-item {
  color: var(--gz-text-secondary);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  font-size: var(--fs-small);
  transition: all 0.2s;
}
.glass-dropdown .dropdown-item:hover {
  color: var(--gz-cyan);
  background: rgba(0,240,255,0.05);
}

/* Scroll Progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gz-grad-hero);
  transform-origin: left;
  transform: scaleX(0);
  z-index: var(--z-sticky);
}

img { max-width: 100%; height: auto; }
a { color: var(--gz-cyan); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--gz-magenta); }

/* Skip Link (Accessibility) */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gz-grad-hero);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  z-index: 100000;
  font-family: var(--font-heading);
  font-weight: 600;
  transition: top 0.3s;
}
.skip-link:focus {
  top: 10px;
  color: #fff;
}