/* =========================================================
   IYULAB v3 Design System — 2026
   Benchmarked: Tulip, Linear, Palantir, C3.ai
   ========================================================= */

/* ── 0. Root tokens ──────────────────────────────────────── */
:root {
  --v3-cyan: #06b6d4;
  --v3-cyan-glow: rgba(6, 182, 212, 0.35);
  --v3-obsidian: #05080f;
  --v3-charcoal: #0d1117;
  --v3-surface: #111827;
  --v3-border: rgba(255,255,255,0.07);
  --v3-border-hover: rgba(6,182,212,0.4);
  --v3-text-muted: #6b7280;
  --v3-text-dim: #374151;
  --v3-transition: cubic-bezier(0.4, 0, 0.2, 1);
  --v3-ease-out: cubic-bezier(0, 0, 0.2, 1);
  --v3-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── 1. Scroll behaviour ─────────────────────────────────── */
html {
  scroll-behavior: smooth;
}

/* ── 2. Scroll-reveal system ─────────────────────────────── */
.v3-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s var(--v3-ease-out),
              transform 0.65s var(--v3-ease-out);
  will-change: opacity, transform;
}
.v3-reveal.v3-left {
  transform: translateX(-28px);
}
.v3-reveal.v3-right {
  transform: translateX(28px);
}
.v3-reveal.v3-scale {
  transform: scale(0.93);
}
.v3-reveal.v3-visible {
  opacity: 1;
  transform: none;
}
.v3-reveal.v3-delay-1 { transition-delay: 0.1s; }
.v3-reveal.v3-delay-2 { transition-delay: 0.2s; }
.v3-reveal.v3-delay-3 { transition-delay: 0.3s; }
.v3-reveal.v3-delay-4 { transition-delay: 0.4s; }
.v3-reveal.v3-delay-5 { transition-delay: 0.5s; }

/* override Next.js inline opacity:0 elements via JS-driven class */
[style*="opacity:0"] {
  transition: opacity 0.65s var(--v3-ease-out),
              transform 0.65s var(--v3-ease-out) !important;
}

/* ── 3. Animated mesh gradient background ────────────────── */
.v3-mesh-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.v3-mesh-bg::before,
.v3-mesh-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: v3-mesh-drift 12s ease-in-out infinite alternate;
}
.v3-mesh-bg::before {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(6,182,212,0.12) 0%, transparent 70%);
  top: -200px; left: -100px;
  animation-delay: 0s;
}
.v3-mesh-bg::after {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(99,102,241,0.10) 0%, transparent 70%);
  bottom: -150px; right: -100px;
  animation-delay: -6s;
}
@keyframes v3-mesh-drift {
  0%   { transform: translate(0,0) scale(1); }
  33%  { transform: translate(60px,-40px) scale(1.08); }
  66%  { transform: translate(-30px, 50px) scale(0.95); }
  100% { transform: translate(30px, -20px) scale(1.05); }
}

/* ── 4. Scroll-progress bar ──────────────────────────────── */
#v3-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--v3-cyan), #818cf8);
  z-index: 9999;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px var(--v3-cyan-glow);
}

/* ── 5. Client logo scroll strip ─────────────────────────── */
.v3-logo-strip {
  overflow: hidden;
  position: relative;
  padding: 20px 0;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.v3-logo-track {
  display: flex;
  gap: 56px;
  width: max-content;
  animation: v3-logo-scroll 28s linear infinite;
  align-items: center;
}
.v3-logo-strip:hover .v3-logo-track {
  animation-play-state: paused;
}
.v3-logo-track .v3-logo-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.30);
  font-size: 0.85rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  letter-spacing: 0.05em;
  white-space: nowrap;
  transition: color 0.3s;
}
.v3-logo-track .v3-logo-item:hover {
  color: rgba(255,255,255,0.7);
}
.v3-logo-track .v3-logo-item svg {
  width: 18px; height: 18px;
  opacity: 0.5;
}
@keyframes v3-logo-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── 6. Stats counter section ────────────────────────────── */
.v3-stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0;
  border: 1px solid var(--v3-border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--v3-charcoal);
}
.v3-stat {
  padding: 28px 24px;
  text-align: center;
  border-right: 1px solid var(--v3-border);
  position: relative;
  transition: background 0.3s;
}
.v3-stat:last-child { border-right: none; }
.v3-stat:hover { background: rgba(6,182,212,0.04); }
.v3-stat::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--v3-cyan);
  transition: width 0.4s var(--v3-ease-out);
}
.v3-stat:hover::after { width: 60%; }
.v3-stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
  line-height: 1;
  margin-bottom: 6px;
}
.v3-stat-value .v3-accent { color: var(--v3-cyan); }
.v3-stat-label {
  font-size: 0.72rem;
  color: var(--v3-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* ── 7. Enhanced card styles ─────────────────────────────── */
.v3-card {
  position: relative;
  background: var(--v3-charcoal);
  border: 1px solid var(--v3-border);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.35s, transform 0.35s var(--v3-spring),
              box-shadow 0.35s;
}
.v3-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
              rgba(6,182,212,0.06), transparent 40%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
  z-index: 0;
}
.v3-card:hover::before { opacity: 1; }
.v3-card:hover {
  border-color: var(--v3-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 0 1px rgba(6,182,212,0.12);
}

/* ── 8. Glow button ──────────────────────────────────────── */
.v3-btn-glow {
  position: relative;
  overflow: hidden;
  transition: all 0.3s var(--v3-ease-out);
}
.v3-btn-glow::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%) scale(0);
  width: 150%;
  padding-bottom: 150%;
  background: radial-gradient(circle, rgba(255,255,255,0.15), transparent 60%);
  border-radius: 50%;
  transition: transform 0.5s var(--v3-ease-out);
}
.v3-btn-glow:hover::before {
  transform: translate(-50%,-50%) scale(1);
}
.v3-btn-glow:hover {
  box-shadow: 0 0 28px var(--v3-cyan-glow),
              0 0 60px rgba(6,182,212,0.12);
}

/* ── 9. Testimonial card ─────────────────────────────────── */
.v3-testimonial {
  background: var(--v3-charcoal);
  border: 1px solid var(--v3-border);
  border-radius: 16px;
  padding: 32px;
  position: relative;
}
.v3-testimonial::before {
  content: '\201C';
  position: absolute;
  top: 16px; left: 24px;
  font-size: 4rem;
  line-height: 1;
  color: var(--v3-cyan);
  opacity: 0.3;
  font-family: Georgia, serif;
}
.v3-testimonial blockquote {
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.8);
  margin: 0 0 20px;
  padding-top: 24px;
}
.v3-testimonial .v3-cite {
  display: flex;
  align-items: center;
  gap: 12px;
}
.v3-testimonial .v3-cite-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--v3-cyan), #818cf8);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 800; color: var(--v3-obsidian);
}
.v3-testimonial .v3-cite-name {
  font-weight: 700; color: #fff; font-size: 0.85rem;
}
.v3-testimonial .v3-cite-role {
  font-size: 0.75rem; color: var(--v3-text-muted);
}

/* ── 10. Section divider ─────────────────────────────────── */
.v3-section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(6,182,212,0.2), transparent);
  margin: 0;
}

/* ── 11. Floating label badge ────────────────────────────── */
.v3-badge-new {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  background: linear-gradient(90deg, rgba(6,182,212,0.15), rgba(99,102,241,0.15));
  border: 1px solid rgba(6,182,212,0.3);
  border-radius: 100px;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--v3-cyan);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: 'JetBrains Mono', monospace;
}
.v3-badge-new::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--v3-cyan);
  animation: v3-pulse-dot 2s ease infinite;
}
@keyframes v3-pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

/* ── 12. Gradient text ───────────────────────────────────── */
.v3-gradient-text {
  background: linear-gradient(135deg, #06b6d4, #818cf8, #06b6d4);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: v3-gradient-shift 4s linear infinite;
}
@keyframes v3-gradient-shift {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* ── 13. Animated grid background ───────────────────────── */
.v3-grid-bg {
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 40px 40px;
}
.v3-grid-bg-sm {
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* ── 14. Terminal / code block aesthetic ─────────────────── */
.v3-terminal {
  background: #0a0e18;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  overflow: hidden;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
}
.v3-terminal-bar {
  background: rgba(255,255,255,0.04);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.v3-terminal-bar .v3-dot {
  width: 10px; height: 10px; border-radius: 50%;
}
.v3-terminal-bar .v3-dot-red   { background: #ef4444; }
.v3-terminal-bar .v3-dot-yellow{ background: #f59e0b; }
.v3-terminal-bar .v3-dot-green { background: #22c55e; }
.v3-terminal-body {
  padding: 20px;
  line-height: 2;
  color: rgba(255,255,255,0.7);
}
.v3-terminal-body .v3-prompt  { color: var(--v3-cyan); }
.v3-terminal-body .v3-comment { color: #4b5563; }
.v3-terminal-body .v3-success { color: #22c55e; }
.v3-terminal-body .v3-warning { color: #f59e0b; }

/* ── 15. Feature tabs ────────────────────────────────────── */
.v3-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--v3-border);
  border-radius: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}
.v3-tabs::-webkit-scrollbar { display: none; }
.v3-tab {
  flex-shrink: 0;
  padding: 8px 20px;
  border-radius: 7px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--v3-text-muted);
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  background: none;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.v3-tab:hover { color: #fff; background: rgba(255,255,255,0.06); }
.v3-tab.v3-tab-active {
  background: var(--v3-surface);
  color: var(--v3-cyan);
  border: 1px solid rgba(6,182,212,0.25);
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

/* ── 16. Comparison table ────────────────────────────────── */
.v3-compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}
.v3-compare-table th,
.v3-compare-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--v3-border);
  font-size: 0.85rem;
}
.v3-compare-table th {
  text-align: left;
  color: rgba(255,255,255,0.5);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(255,255,255,0.02);
}
.v3-compare-table .v3-col-highlight {
  background: rgba(6,182,212,0.04);
  border-left: 1px solid rgba(6,182,212,0.15);
  border-right: 1px solid rgba(6,182,212,0.15);
}
.v3-compare-table .v3-col-highlight th {
  color: var(--v3-cyan);
  background: rgba(6,182,212,0.08);
}
.v3-compare-icon-yes { color: #22c55e; }
.v3-compare-icon-no  { color: #ef4444; opacity: 0.5; }
.v3-compare-icon-partial { color: #f59e0b; }

/* ── 17. Highlight blockquote (testimonial inline) ───────── */
.v3-highlight-quote {
  border-left: 3px solid var(--v3-cyan);
  padding: 16px 24px;
  background: rgba(6,182,212,0.04);
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
  line-height: 1.7;
}
.v3-highlight-quote cite {
  display: block;
  margin-top: 10px;
  font-style: normal;
  font-size: 0.8rem;
  color: var(--v3-text-muted);
}

/* ── 18. Number counter ──────────────────────────────────── */
.v3-counter {
  display: inline-block;
  font-variant-numeric: tabular-nums;
}

/* ── 19. Toast / notification popup ─────────────────────── */
.v3-toast {
  position: fixed;
  bottom: 80px;
  right: 24px;
  max-width: 280px;
  background: var(--v3-charcoal);
  border: 1px solid var(--v3-border);
  border-left: 3px solid var(--v3-cyan);
  border-radius: 10px;
  padding: 14px 18px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
  z-index: 8888;
  transform: translateX(320px);
  opacity: 0;
  transition: transform 0.4s var(--v3-spring), opacity 0.4s;
  font-size: 0.82rem;
}
.v3-toast.v3-toast-show {
  transform: translateX(0);
  opacity: 1;
}
.v3-toast-title {
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
  font-size: 0.85rem;
}
.v3-toast-body { color: var(--v3-text-muted); line-height: 1.5; }

/* ── 20. Section label ───────────────────────────────────── */
.v3-section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--v3-cyan);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 16px;
}
.v3-section-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--v3-cyan);
  opacity: 0.6;
}

/* ── 21. Step timeline ───────────────────────────────────── */
.v3-timeline {
  position: relative;
  padding-left: 32px;
}
.v3-timeline::before {
  content: '';
  position: absolute;
  left: 9px; top: 8px; bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--v3-cyan), rgba(99,102,241,0.4), transparent);
}
.v3-timeline-item {
  position: relative;
  margin-bottom: 32px;
}
.v3-timeline-item::before {
  content: '';
  position: absolute;
  left: -27px; top: 6px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--v3-obsidian);
  border: 2px solid var(--v3-cyan);
  box-shadow: 0 0 8px rgba(6,182,212,0.4);
  transition: background 0.3s, transform 0.3s;
}
.v3-timeline-item:hover::before {
  background: var(--v3-cyan);
  transform: scale(1.3);
}

/* ── 22. Hero background animated particles ──────────────── */
@keyframes v3-float-up {
  0%   { transform: translateY(0) translateX(0); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.6; }
  100% { transform: translateY(-120px) translateX(var(--float-x, 20px)); opacity: 0; }
}
.v3-particle {
  position: absolute;
  width: 2px; height: 2px;
  border-radius: 50%;
  background: var(--v3-cyan);
  pointer-events: none;
  animation: v3-float-up var(--duration, 6s) var(--delay, 0s) infinite ease-in-out;
}

/* ── 23. Noise overlay texture ───────────────────────────── */
.v3-noise::before {
  content: '';
  position: absolute;
  inset: 0;
  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)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.3;
  mix-blend-mode: overlay;
  z-index: 1;
}

/* ── 24. Nav enhancement ─────────────────────────────────── */
nav.v3-nav-scrolled {
  background: rgba(5, 8, 15, 0.92) !important;
  border-bottom-color: rgba(255,255,255,0.08) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding-top: 14px !important;
  padding-bottom: 14px !important;
}

/* ── 25. Hero typing cursor ──────────────────────────────── */
.v3-cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--v3-cyan);
  margin-left: 3px;
  vertical-align: text-bottom;
  animation: v3-blink 1s step-end infinite;
}
@keyframes v3-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── 26. ROI impact badge ────────────────────────────────── */
.v3-roi-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(34, 197, 94, 0.10);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #4ade80;
  font-family: 'JetBrains Mono', monospace;
}
.v3-roi-badge-warn {
  background: rgba(245, 158, 11, 0.10);
  border-color: rgba(245, 158, 11, 0.25);
  color: #fbbf24;
}

/* ── 27. Responsive tweaks ───────────────────────────────── */
@media (max-width: 768px) {
  .v3-stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .v3-stat:nth-child(2n) { border-right: none; }
  .v3-stat:nth-child(1), .v3-stat:nth-child(2) {
    border-bottom: 1px solid var(--v3-border);
  }
  .v3-reveal { transform: translateY(16px); }
  .v3-reveal.v3-left, .v3-reveal.v3-right { transform: translateY(16px); }
}

/* ── 28. Smooth page entrance ────────────────────────────── */
body {
  animation: v3-page-enter 0.4s ease-out both;
}
@keyframes v3-page-enter {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── 29. Footer enhancement ──────────────────────────────── */
footer.v3-footer-enhanced {
  position: relative;
}
footer.v3-footer-enhanced::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(6,182,212,0.3), transparent);
}

/* ── 30. CTA section glow ────────────────────────────────── */
.v3-cta-glow {
  position: relative;
}
.v3-cta-glow::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 400px; height: 200px;
  background: radial-gradient(ellipse, rgba(6,182,212,0.12), transparent 70%);
  pointer-events: none;
}