/* =========================================================
   KooldLabAI — Global Stylesheet
   Dark theme | Inter + JetBrains Mono | Cyan accent
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=IM+Fell+English&family=Crimson+Pro:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
  --bg-base:       #0a0a0f;
  --bg-card:       #111118;
  --bg-card-hover: #16161f;
  --bg-nav:        rgba(10, 10, 15, 0.92);
  --border:        #1e1e2e;
  --accent:        #00d4ff;
  --accent-dim:    rgba(0, 212, 255, 0.12);
  --accent-mid:    rgba(0, 212, 255, 0.35);
  --text-primary:  #e8e8f0;
  --text-secondary:#8888a8;
  --text-muted:    #55556a;
  --tag-bg:        #1a1a28;
  --tag-text:      #00d4ff;
  --success:       #00ffaa;
  --warning:       #ffaa00;
  --nav-height:    64px;
  --radius:        10px;
  --radius-sm:     6px;
  --transition:    0.2s ease;
  --shadow-card:   0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow:   0 0 24px rgba(0,212,255,0.08);
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: 'Crimson Pro', 'Times New Roman', 'Georgia', serif;
  font-size: 18px;
  line-height: 1.65;
  min-height: 100vh;
  font-feature-settings: "kern" 1, "liga" 1, "onum" 0;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--transition);
}
a:hover { opacity: 0.8; }

img { max-width: 100%; display: block; }

/* ----- Utility ----- */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 48px;
}

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

.tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--tag-text);
  background: var(--tag-bg);
  border: 1px solid var(--accent-mid);
  border-radius: 4px;
  padding: 2px 8px;
  letter-spacing: 0.04em;
}

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 4px;
  padding: 2px 10px;
  letter-spacing: 0.03em;
}
.badge-video   { background: rgba(0,212,255,0.15); color: #00d4ff; }
.badge-coming  { background: rgba(85,85,106,0.3);  color: #8888a8; }
.badge-dev     { background: rgba(255,170,0,0.15); color: #ffaa00; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #0a0a0f;
}
.btn-primary:hover {
  background: #33ddff;
  opacity: 1;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,212,255,0.3);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent-mid);
}
.btn-outline:hover {
  background: var(--accent-dim);
  opacity: 1;
  border-color: var(--accent);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
  opacity: 1;
}

/* ----- Navigation ----- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}
.nav-logo img {
  width: 32px;
  height: 32px;
}
.nav-logo-text {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.nav-logo-text span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--accent-dim);
  opacity: 1;
}
.nav-links a.active {
  color: var(--accent);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  z-index: 999;
  flex-direction: column;
  gap: 4px;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition);
}
.nav-mobile a:hover,
.nav-mobile a.active {
  color: var(--text-primary);
  background: var(--accent-dim);
  opacity: 1;
}
.nav-mobile a.active { color: var(--accent); }

/* ----- Page offset for fixed nav ----- */
.page-content {
  padding-top: var(--nav-height);
  position: relative;
  z-index: 1;
}

/* ----- Hero ----- */
.hero {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0,212,255,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 720px; }

.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 20px;
  font-style: italic;
}

.hero-domain-line {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  min-height: 1.7em;
}
.hero-domain-label { color: var(--text-muted); }
#hero-domain {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  display: inline-block;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ----- Cards ----- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-mid);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.card-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
}
.card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}
.card-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
}
.card-link::after { content: ' →'; }

/* Grid layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* ----- Product card ----- */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--accent-mid);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  gap: 28px;
  align-items: flex-start;
  box-shadow: var(--shadow-glow);
  transition: all var(--transition);
}
.product-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0,212,255,0.12);
}
.product-card-icon {
  font-size: 2.8rem;
  flex-shrink: 0;
  line-height: 1;
}
.product-card-body { flex: 1; }
.product-card-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.product-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.3;
}
.product-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}
.product-card-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

/* ----- Research under-dev card ----- */
.dev-banner {
  background: linear-gradient(135deg, #111118 0%, #141420 100%);
  border: 1px solid rgba(255,170,0,0.3);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.dev-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #ffaa00, transparent);
}
.dev-banner-icon { font-size: 3rem; margin-bottom: 16px; }
.dev-banner-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.dev-banner-desc {
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 24px;
  font-size: 0.95rem;
  line-height: 1.7;
}
.dev-tags { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }

/* ----- Empty state ----- */
.empty-state {
  text-align: center;
  padding: 80px 24px;
}
.empty-state-icon { font-size: 3rem; margin-bottom: 20px; opacity: 0.5; }
.empty-state-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.empty-state-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 420px;
  margin: 0 auto;
}

/* ----- Page hero (inner pages) ----- */
.page-hero {
  padding: 60px 0 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 64px;
}
.page-hero-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.page-hero-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.page-hero-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
}

/* ----- About page ----- */
.mission-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
}
.mission-block h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.mission-block h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}
.mission-block p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}
.mission-block ul {
  list-style: none;
  padding: 0;
}
.mission-block ul li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}
.mission-block ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8em;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.value-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.value-item-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.value-item-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.value-item-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ----- Learn page ----- */
.learn-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}
.learn-card:hover {
  border-color: var(--accent-mid);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.learn-card.coming-soon {
  opacity: 0.5;
  cursor: default;
}
.learn-card.coming-soon:hover {
  transform: none;
  border-color: var(--border);
  box-shadow: none;
}
.learn-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 14px;
}
.learn-card-icon { font-size: 2rem; }
.learn-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.3;
}
.learn-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 20px;
}
.learn-card-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 20px; }

/* ----- Footer ----- */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  margin-top: 80px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  font-size: 0.9rem;
  color: var(--text-muted);
}
.footer-brand strong { color: var(--text-secondary); }
.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color var(--transition);
}
.footer-links a:hover {
  color: var(--text-secondary);
  opacity: 1;
}
.footer-note {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 20px;
}

/* ----- Divider ----- */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 56px 0;
}

/* ----- Fade-in animation ----- */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ----- Contact placeholder ----- */
.contact-placeholder {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding: 80px 0;
}
.contact-placeholder-icon { font-size: 3rem; margin-bottom: 24px; }
.contact-placeholder h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.contact-placeholder p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ----- Hero Canvas (particle network) ----- */
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  display: block;
}

/* Ensure hero content sits above the canvas */
.hero { position: relative; overflow: hidden; isolation: isolate; }
.hero .container { position: relative; z-index: 1; }

/* ----- Glow Blobs (drifting background gradient) ----- */
.glow-blob {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  will-change: transform;
  filter: blur(80px);
}

.glow-blob-1 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.055) 0%, transparent 70%);
  top: -180px;
  left: -200px;
  animation: blobDrift1 22s ease-in-out infinite alternate;
}

.glow-blob-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(120, 80, 255, 0.04) 0%, transparent 70%);
  top: 40%;
  right: -200px;
  animation: blobDrift2 28s ease-in-out infinite alternate;
}

.glow-blob-3 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.03) 0%, transparent 70%);
  bottom: 5%;
  left: 30%;
  animation: blobDrift3 18s ease-in-out infinite alternate;
}

@keyframes blobDrift1 {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(80px, 60px) scale(1.08); }
  66%  { transform: translate(-40px, 120px) scale(0.95); }
  100% { transform: translate(60px, -40px) scale(1.05); }
}

@keyframes blobDrift2 {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(-100px, 80px) scale(1.1); }
  66%  { transform: translate(60px, -60px) scale(0.92); }
  100% { transform: translate(-80px, 40px) scale(1.06); }
}

@keyframes blobDrift3 {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(120px, -80px) scale(1.12); }
  100% { transform: translate(-60px, 60px) scale(0.94); }
}

/* Scroll parallax — blobs shift via CSS custom property updated by JS */
.glow-blob-1 { transform: translateY(calc(var(--scroll-y, 0) * -0.06px)); }
.glow-blob-2 { transform: translateY(calc(var(--scroll-y, 0) * 0.04px)); }
.glow-blob-3 { transform: translateY(calc(var(--scroll-y, 0) * -0.03px)); }

/* Section title glow — triggered by JS on scroll entry */
.title-glow {
  animation: titleGlowPulse 1.2s ease-out forwards;
}
@keyframes titleGlowPulse {
  0%   { text-shadow: none; }
  40%  { text-shadow: 0 0 24px rgba(0, 212, 255, 0.35); }
  100% { text-shadow: none; }
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  .glow-blob { animation: none !important; }
  #hero-canvas { display: none; }
  .title-glow { animation: none !important; }
}

/* ----- Responsive ----- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .grid-3, .grid-2 {
    grid-template-columns: 1fr;
  }
  .values-grid {
    grid-template-columns: 1fr;
  }
  .product-card {
    flex-direction: column;
    gap: 16px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .section { padding: 56px 0; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}