/* ==========================================================================
   KAZZOLA — Minimalist Technical Design System (pi.dev / Nothing / OpenCode aesthetic)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Doto:wght@400;700;900&family=Instrument+Serif:ital,wght@0,400;1,400&family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=Silkscreen:wght@400;700&display=swap');

:root {
  --kz-blue: #00b0f0;
  --kz-blue-hover: #0098d1;
  --kz-blue-glow: rgba(0, 176, 240, 0.25);
  --bg-pitch: #08090c;
  --bg-surface: rgba(0, 0, 0, 0.6);
  --bg-card: rgba(0, 0, 0, 0.6);
  --border-muted: rgba(255, 255, 255, 0.1);
  --border-active: rgba(0, 176, 240, 0.5);
  --font-dot: 'Doto', 'Silkscreen', monospace;
  --font-mono: 'JetBrains Mono', monospace;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

html {
  overflow-x: hidden;
  max-width: 100%;
  width: 100%;
}

body {
  background-color: var(--bg-pitch);
  color: #f3f4f6;
  font-family: var(--font-mono);
  overflow-x: hidden;
  max-width: 100%;
  width: 100%;
  position: relative;
  letter-spacing: -0.01em;
}

/* Technical Grid Background */
.bg-tech-grid {
  background-size: 32px 32px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
}

.bg-dot-grid {
  background-size: 24px 24px;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
}

/* Typography Utilities */
.font-dot {
  font-family: var(--font-dot);
}

.font-mono-tech {
  font-family: var(--font-mono);
}

.font-editorial-serif {
  font-family: var(--font-serif);
  font-style: italic;
}

.font-body {
  font-family: var(--font-sans);
}

/* Technical Corner Brackets */
.corner-frame {
  position: relative;
}

.corner-frame::before,
.corner-frame::after {
  content: '';
  position: absolute;
  width: 6px;
  height: 6px;
  pointer-events: none;
  border-color: rgba(255, 255, 255, 0.3);
  transition: border-color 0.2s ease;
}

.corner-frame::before {
  top: -1px;
  left: -1px;
  border-top: 1px solid currentColor;
  border-left: 1px solid currentColor;
}

.corner-frame::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 1px solid currentColor;
  border-right: 1px solid currentColor;
}

.corner-frame:hover::before,
.corner-frame:hover::after {
  border-color: var(--kz-blue);
}

/* Technical Panels */
.tech-panel {
  background-color: rgba(0, 0, 0, 0.6) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.tech-panel:hover {
  border-color: rgba(255, 255, 255, 0.25) !important;
}

.tech-panel-active {
  border-color: var(--kz-blue) !important;
  box-shadow: 0 0 20px var(--kz-blue-glow);
}

/* Nav Link Underline in Kazzola Blue */
.tech-nav-link {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #94a3b8;
  padding: 6px 2px;
  transition: color 0.2s ease;
}

.tech-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--kz-blue);
  box-shadow: 0 0 8px var(--kz-blue);
  transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.tech-nav-link:hover {
  color: #ffffff;
}

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

/* Terminal Tab Switcher */
.term-tab {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 8px 16px;
  color: #64748b;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.term-tab:hover {
  color: #cbd5e1;
}

.term-tab.active {
  color: #ffffff;
  border-bottom-color: var(--kz-blue);
  background-color: rgba(0, 176, 240, 0.06);
}

/* Custom Sliders */
input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: #1e293b;
  border-radius: 0px;
  outline: none;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  background: var(--kz-blue);
  cursor: pointer;
  box-shadow: 0 0 8px var(--kz-blue);
  border-radius: 0px;
}

input[type=range]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: var(--kz-blue);
  cursor: pointer;
  box-shadow: 0 0 8px var(--kz-blue);
  border-radius: 0px;
  border: none;
}

/* Blinking Terminal Cursor */
.blinking-cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background-color: var(--kz-blue);
  vertical-align: middle;
  margin-left: 4px;
  animation: blink 1s step-end infinite;
}

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

/* Subtle Glow Backdrop */
.hero-glow-dark {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(600px, 100vw);
  max-width: 100%;
  height: 350px;
  background: radial-gradient(circle, rgba(0, 176, 240, 0.12) 0%, rgba(8, 9, 12, 0) 70%);
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

/* Marquee */
@keyframes techMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.animate-tech-marquee {
  display: flex !important;
  width: max-content !important;
  animation: techMarquee 25s linear infinite !important;
  will-change: transform;
}

.animate-tech-marquee:hover {
  animation-play-state: paused !important;
}

/* ==========================================================================
   Smooth Scroll-Triggered Left Entrance Animation (Fully Reversible & Repeatable)
   ========================================================================== */
.slide-in-left-card {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease, box-shadow 0.2s ease;
  will-change: transform, opacity;
}

@media (max-width: 768px) {
  .slide-in-left-card {
    transform: translateX(-24px);
  }
}

/* Staggered retreat when leaving */
.slide-in-left-card:nth-child(3) { transition-delay: 0ms; }
.slide-in-left-card:nth-child(2) { transition-delay: 60ms; }
.slide-in-left-card:nth-child(1) { transition-delay: 120ms; }

/* Staggered arrival when entering */
.slide-in-left-card.is-visible {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease, box-shadow 0.2s ease;
}

.slide-in-left-card.is-visible:nth-child(1) {
  transition-delay: 0ms;
}

.slide-in-left-card.is-visible:nth-child(2) {
  transition-delay: 120ms;
}

.slide-in-left-card.is-visible:nth-child(3) {
  transition-delay: 240ms;
}

/* Mobile Drawer Links */
.mobile-nav-link {
  transition: all 0.2s ease;
  letter-spacing: 0.06em;
}

.mobile-nav-link:active {
  color: var(--kz-blue);
  padding-left: 4px;
}

/* Touch targets optimization */
@media (max-width: 640px) {
  input[type=range] {
    height: 6px;
  }
  input[type=range]::-webkit-slider-thumb {
    width: 20px;
    height: 20px;
  }
  input[type=range]::-moz-range-thumb {
    width: 20px;
    height: 20px;
  }
}