/* ==========================================================================
   TRY LHUPI - main stylesheet
   Futuristic AI-first single page. Dark navy, electric blue glow.
   ========================================================================== */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Ambient background: layered navy gradients over the base */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 500px at 85% -5%, rgba(77, 124, 254, 0.14), transparent 60%),
    radial-gradient(700px 500px at 8% 30%, rgba(77, 124, 254, 0.08), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(77, 124, 254, 0.10), transparent 60%);
  pointer-events: none;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

h1, h2, h3 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-sm);
}

h1 { font-size: var(--text-hero); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); letter-spacing: 0.04em; }

p { margin: 0 0 var(--space-sm); color: var(--color-muted); }
p.lead { font-size: var(--text-lead); color: var(--color-text); }

a { color: var(--color-accent); }
img { max-width: 100%; }

/* Terminal-style section labels: // 01 / services */
.sys-label {
  display: block;
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  font-size: var(--text-caption);
  letter-spacing: 0.14em;
  color: var(--color-accent);
  text-transform: lowercase;
  margin-bottom: var(--space-sm);
}
.sys-label::before { content: "> "; color: var(--color-faint); }

.glow-text {
  color: var(--lhupi-blue-glow);
  text-shadow: 0 0 32px rgba(77, 124, 254, 0.65);
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-body);
  padding: 0.9rem 1.9rem;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), background var(--duration) var(--ease);
}
.btn-primary {
  background: linear-gradient(135deg, #4D7CFE, #3A5FE0);
  color: #fff;
  box-shadow: var(--glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-strong);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-line);
}
.btn-ghost:hover { border-color: var(--color-accent); box-shadow: var(--glow); }
.btn-sm { padding: 0.6rem 1.3rem; font-size: var(--text-small); }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 7, 15, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}
.brand { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; }
.brand-logo { width: 38px; height: 38px; border-radius: 50%; display: block; box-shadow: var(--glow); }
.brand-name .brand-try { color: var(--color-accent); }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.06em;
  color: var(--color-text);
  text-transform: uppercase;
}
.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav-link {
  color: var(--color-muted);
  text-decoration: none;
  font-size: var(--text-small);
  font-weight: 500;
  letter-spacing: 0.04em;
}
.nav-link:hover { color: var(--color-text); }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 1.2rem;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 94vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
#stars {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }
.hero h1 { max-width: 14ch; margin-bottom: var(--space-md); }
.hero .sub {
  font-size: var(--text-lead);
  color: var(--color-muted);
  max-width: 52ch;
  margin-bottom: var(--space-md);
}
.cta-row { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: var(--space-md); }
.hero-meta {
  margin-top: var(--space-lg);
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: var(--text-caption);
  color: var(--color-faint);
  letter-spacing: 0.1em;
}
.hero-meta .dot { color: var(--color-accent); }

/* Scroll cue */
.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-faint);
  font-size: var(--text-caption);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: cue-float 2.4s ease-in-out infinite;
}
@keyframes cue-float {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.6; }
  50% { transform: translate(-50%, 8px); opacity: 1; }
}

/* ---- Sections ---- */
section.block { padding: var(--space-2xl) 0; position: relative; }
.section-head { max-width: 64ch; margin-bottom: var(--space-lg); }

/* ---- Glass cards ---- */
.glass {
  background: linear-gradient(160deg, rgba(20, 28, 58, 0.72), rgba(10, 14, 28, 0.72));
  border: 1px solid rgba(77, 124, 254, 0.22);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(143, 168, 255, 0.12), 0 12px 40px rgba(0, 0, 0, 0.35);
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), border-color var(--duration) var(--ease);
}
.glass:hover {
  transform: translateY(-4px);
  border-color: rgba(77, 124, 254, 0.5);
  box-shadow: inset 0 1px 0 rgba(143, 168, 255, 0.18), var(--glow-strong), 0 16px 48px rgba(0, 0, 0, 0.4);
}

/* ---- Services ---- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.service-card { padding: 2rem 1.7rem; }
.service-card .icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-accent-soft);
  border: 1px solid rgba(77, 124, 254, 0.35);
  box-shadow: var(--glow);
  margin-bottom: 1.2rem;
}
.service-card .icon svg { width: 26px; height: 26px; stroke: var(--lhupi-blue-glow); }
.service-card h3 { margin-bottom: 0.6rem; }
.service-card ul { margin: 1rem 0 0; padding: 0; list-style: none; }
.service-card li {
  color: var(--color-muted);
  font-size: var(--text-small);
  padding: 0.45rem 0 0.45rem 1.4rem;
  position: relative;
  border-top: 1px solid rgba(27, 37, 69, 0.7);
}
.service-card li::before {
  content: "▸";
  position: absolute; left: 0;
  color: var(--color-accent);
}

/* ---- AI demo ---- */
.demo-shell {
  max-width: 760px;
  margin: 0 auto;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(77, 124, 254, 0.3);
  background: rgba(8, 12, 26, 0.9);
  box-shadow: var(--glow-strong), 0 24px 80px rgba(0, 0, 0, 0.5);
}
.demo-bar {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 1.2rem;
  background: rgba(13, 19, 38, 0.95);
  border-bottom: 1px solid var(--color-line);
}
.demo-bar .lights { display: flex; gap: 0.45rem; }
.demo-bar .lights span { width: 11px; height: 11px; border-radius: 50%; background: #2A3560; }
.demo-bar .lights span:first-child { background: #4D7CFE; box-shadow: 0 0 10px rgba(77,124,254,.8); }
.demo-title {
  margin-left: 0.6rem;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: var(--text-small);
  color: var(--color-muted);
  letter-spacing: 0.08em;
}
.demo-body { padding: 1.6rem; min-height: 340px; }
.demo-line { display: flex; gap: 0.8rem; margin-bottom: 1.1rem; align-items: flex-start; }
.demo-avatar {
  flex: 0 0 34px; width: 34px; height: 34px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 700;
  background: rgba(77, 124, 254, 0.16);
  border: 1px solid rgba(77, 124, 254, 0.5);
  color: var(--lhupi-blue-glow);
}
.demo-avatar.user { background: rgba(154, 166, 199, 0.12); border-color: var(--color-line); color: var(--color-muted); }
.demo-bubble {
  background: rgba(20, 28, 58, 0.6);
  border: 1px solid rgba(77, 124, 254, 0.18);
  border-radius: 4px 14px 14px 14px;
  padding: 0.85rem 1.1rem;
  font-size: var(--text-small);
  color: var(--color-text);
  max-width: 88%;
  line-height: 1.6;
}
.demo-bubble.user {
  background: rgba(154, 166, 199, 0.08);
  border-color: var(--color-line);
  border-radius: 14px 4px 14px 14px;
  margin-left: auto;
}
.demo-line.user { justify-content: flex-end; }
.typing-caret::after {
  content: "▍";
  color: var(--color-accent);
  animation: blink 0.8s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.demo-chips { display: flex; gap: 0.7rem; flex-wrap: wrap; padding: 0 1.6rem 1.6rem; }
.chip {
  font-size: var(--text-small);
  color: var(--lhupi-blue-glow);
  background: rgba(77, 124, 254, 0.08);
  border: 1px solid rgba(77, 124, 254, 0.35);
  border-radius: 999px;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  font-family: var(--font-body);
}
.chip:hover:not(:disabled) {
  background: rgba(77, 124, 254, 0.18);
  box-shadow: var(--glow);
  transform: translateY(-1px);
}
.chip:disabled { opacity: 0.35; cursor: default; }
.demo-note {
  padding: 0 1.6rem 1.4rem;
  font-size: var(--text-caption);
  color: var(--color-faint);
  font-family: ui-monospace, Menlo, Consolas, monospace;
  letter-spacing: 0.06em;
}

/* ---- Ecosystem loop ---- */
.eco-wrap { max-width: 560px; margin: 0 auto; position: relative; }
.eco-node {
  display: flex; align-items: center; gap: 1.1rem;
  padding: 1.1rem 1.4rem;
  border-radius: 999px;
  margin-bottom: 0.4rem;
  background: rgba(13, 19, 38, 0.55);
  border: 1px solid var(--color-line);
  opacity: 0.35;
  transform: translateY(12px) scale(0.98);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease), box-shadow 600ms var(--ease), border-color 600ms var(--ease);
}
.eco-node.lit {
  opacity: 1;
  transform: none;
  border-color: rgba(77, 124, 254, 0.65);
  box-shadow: var(--glow-strong), inset 0 1px 0 rgba(143, 168, 255, 0.2);
  background: linear-gradient(160deg, rgba(24, 34, 72, 0.9), rgba(10, 14, 28, 0.9));
}
.eco-glyph {
  flex: 0 0 44px; width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(77, 124, 254, 0.1);
  border: 1px solid rgba(77, 124, 254, 0.3);
}
.eco-glyph svg { width: 24px; height: 24px; stroke: var(--color-faint); transition: stroke 600ms; }
.eco-node.lit .eco-glyph svg { stroke: var(--lhupi-blue-glow); filter: drop-shadow(0 0 6px rgba(77,124,254,.8)); }
.eco-node h3 { margin: 0; font-size: 1.05rem; letter-spacing: 0.08em; }
.eco-node p { margin: 0.15rem 0 0; font-size: var(--text-small); }
.eco-link {
  text-align: center;
  color: var(--color-faint);
  font-size: 1.3rem;
  line-height: 1;
  height: 1.6rem;
  transition: color 600ms, text-shadow 600ms;
}
.eco-link.lit { color: var(--color-accent); text-shadow: 0 0 12px rgba(77,124,254,.9); }
.eco-loop-note {
  text-align: center;
  margin-top: 1.4rem;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: var(--text-small);
  color: var(--color-muted);
  letter-spacing: 0.06em;
}
.eco-loop-note strong { color: var(--lhupi-blue-glow); }
.eco-tagline {
  text-align: center;
  margin-top: var(--space-lg);
  font-size: var(--text-lead);
  color: var(--color-text);
}
.eco-tagline .glow-text { font-weight: 600; }

/* ---- Process ---- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  counter-reset: step;
}
.process-card { padding: 2rem 1.7rem; position: relative; overflow: hidden; }
.process-card::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-display);
  font-size: 3.4rem;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(77, 124, 254, 0.5);
  display: block;
  margin-bottom: 1rem;
}
.process-card h3 { margin-bottom: 0.5rem; }

/* ---- Proof strip ---- */
.proof {
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: rgba(10, 14, 28, 0.6);
}
.proof-inner {
  display: flex; align-items: center; gap: 1.2rem;
  padding-top: var(--space-md); padding-bottom: var(--space-md);
  flex-wrap: wrap;
}
.proof .pulse {
  flex: 0 0 10px; width: 10px; height: 10px; border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 12px rgba(77,124,254,.9);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: 0.4; } }
.proof p { margin: 0; font-size: var(--text-small); flex: 1 1 300px; }
.proof a { white-space: nowrap; }

/* ---- Contact ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-lg);
  align-items: start;
}
.contact-info h2 { margin-bottom: var(--space-sm); }
.direct { margin-top: var(--space-md); display: grid; gap: 0.7rem; }
.direct a {
  display: flex; align-items: center; gap: 0.8rem;
  color: var(--color-text); text-decoration: none;
  padding: 0.9rem 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  font-size: var(--text-small);
  transition: border-color var(--duration), box-shadow var(--duration);
}
.direct a:hover { border-color: var(--color-accent); box-shadow: var(--glow); }
.direct .k { color: var(--color-faint); font-family: ui-monospace, Menlo, monospace; font-size: var(--text-caption); letter-spacing: 0.08em; }

.enquiry-form {
  padding: 2rem;
}
.field { margin-bottom: 1.1rem; }
.field label {
  display: block;
  font-size: var(--text-caption);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.45rem;
}
.field input, .field select, .field textarea {
  width: 100%;
  background: rgba(5, 7, 15, 0.7);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 0.8rem 1rem;
  font-family: var(--font-body);
  font-size: var(--text-body);
  transition: border-color var(--duration), box-shadow var(--duration);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: var(--glow);
}
.field select option { background: #0A0E1C; }
.field textarea { min-height: 110px; resize: vertical; }

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding: var(--space-lg) 0 var(--space-md);
  background: rgba(5, 7, 15, 0.6);
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; flex-wrap: wrap;
}
.footer-links { display: flex; gap: 1.4rem; }
.footer-links a { color: var(--color-muted); text-decoration: none; font-size: var(--text-small); }
.footer-links a:hover { color: var(--color-text); }
.footer-note {
  margin-top: var(--space-md);
  font-size: var(--text-caption);
  color: var(--color-faint);
  font-family: ui-monospace, Menlo, Consolas, monospace;
  letter-spacing: 0.06em;
}

/* ---- Reveal choreography ---- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 90ms; }
.reveal[data-delay="2"] { transition-delay: 180ms; }
.reveal[data-delay="3"] { transition-delay: 270ms; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .service-grid, .process-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(5, 7, 15, 0.97);
    border-bottom: 1px solid var(--color-line);
    padding: 0.6rem var(--gutter) 1rem;
  }
  .nav.open { display: flex; }
  .nav-link, .nav .btn { padding: 0.7rem 0; }
  .nav-toggle { display: block; }
  .site-header { position: sticky; }
  .header-inner { position: relative; }
  .demo-body { padding: 1.1rem; min-height: 300px; }
  .demo-chips { padding: 0 1.1rem 1.1rem; }
  .eco-node { border-radius: 18px; }
}