/* DepthMind — deep-learning theme. Layers, depth, neural architecture, research-grade. */
@import url('https://fonts.googleapis.com/css2?family=Bitter:wght@500;600;700&family=PT+Sans:wght@400;700&display=swap');

:root {
  --midnight: #0C0A09;
  --panel: #14110F;
  --panel-2: #1C1815;
  --amber: #F59E0B;
  --purple: #9333EA;
  --purple-soft: rgba(147, 51, 234, 0.16);
  --stone: #78716C;
  --cream: #FAFAF9;
  --muted: #A8A29E;
  --card: rgba(120, 113, 108, 0.08);
  --card-line: rgba(120, 113, 108, 0.30);
  --maxw: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'PT Sans', system-ui, sans-serif;
  background: var(--midnight);
  color: var(--cream);
  line-height: 1.7;
  overflow-x: hidden;
}
h1, h2, h3, h4 { font-family: 'Bitter', Georgia, serif; line-height: 1.16; color: var(--cream); font-weight: 700; }
h1 { font-size: clamp(2.3rem, 5.4vw, 4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); font-weight: 600; }
p { color: var(--muted); }
a { color: var(--amber); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--cream); }
img { max-width: 100%; display: block; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 26px; }
section { padding: clamp(58px, 8vw, 116px) 0; position: relative; }
.lead { font-size: clamp(1.02rem, 1.6vw, 1.2rem); color: #D6D3D1; max-width: 640px; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

/* Layer label — the signature DepthMind motif */
.layer-label {
  display: inline-block;
  font-family: 'PT Sans', sans-serif;
  text-transform: uppercase;
  letter-spacing: .34em;
  font-size: .7rem;
  font-weight: 700;
  color: var(--amber);
  padding-bottom: 4px;
  border-bottom: 2px solid var(--purple);
}

/* Buttons — solid purple fill, amber hover with white text. Sharp corners. */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 30px; border-radius: 4px; font-weight: 700;
  font-family: 'PT Sans', sans-serif; cursor: pointer; border: 2px solid transparent;
  font-size: .96rem; letter-spacing: .01em;
  transition: background-color .25s ease, color .25s ease, border-color .25s ease, transform .25s ease;
}
.btn-primary { background-color: var(--purple); color: #FFFFFF; }
.btn-primary:hover { background-color: var(--amber); color: #FFFFFF; transform: translateY(-2px); }
.btn-outline { background-color: transparent; color: var(--amber); border-color: var(--amber); }
.btn-outline:hover { background-color: var(--amber); color: var(--midnight); transform: translateY(-2px); }

/* Header / nav — dark fixed */
header.site {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(12, 10, 9, 0.86); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { display: flex; align-items: center; gap: 12px; font-family: 'Bitter', serif; font-weight: 700; font-size: 1.36rem; color: var(--cream); }
.logo .mark {
  width: 34px; height: 34px; border-radius: 5px; position: relative; flex: 0 0 34px;
  background:
    linear-gradient(var(--purple), var(--purple)) top/100% 33% no-repeat,
    linear-gradient(var(--amber), var(--amber)) center/100% 33% no-repeat,
    linear-gradient(var(--stone), var(--stone)) bottom/100% 33% no-repeat;
}
.logo b { color: var(--amber); font-weight: 700; }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a { color: var(--cream); font-weight: 700; font-size: .94rem; }
.nav-links a:hover { color: var(--amber); }
.nav-cta { display: flex; align-items: center; gap: 16px; }
.burger { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 8px; }
.burger span { width: 26px; height: 2px; background: var(--cream); transition: .3s; }

/* Layered section accent — stacked depth lines on the left */
.depth { position: relative; }
.depth::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(var(--purple), transparent);
}

/* Hero — deep neural architecture */
.hero { padding-top: 168px; padding-bottom: 90px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(820px 460px at 82% 8%, rgba(147, 51, 234, .20), transparent 62%),
    radial-gradient(620px 480px at 4% 96%, rgba(245, 158, 11, .12), transparent 60%);
}
.hero .wrap { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; gap: 58px; align-items: center; }
.hero h1 { margin: 20px 0; }
.hero h1 .accent { color: var(--amber); }
.hero-actions { display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap; }
.hero-tag { margin-top: 26px; font-family: 'Bitter', serif; font-style: italic; color: var(--stone); }

/* Hero stacked visual */
.hero-stack { position: relative; }
.hero-stack img { border-radius: 8px; border: 1px solid var(--card-line); box-shadow: 0 36px 90px rgba(0,0,0,.6); position: relative; z-index: 2; }
.hero-stack::before, .hero-stack::after {
  content: ""; position: absolute; inset: 0; border-radius: 8px; border: 1px solid var(--card-line);
}
.hero-stack::before { transform: translate(16px, 16px); background: var(--panel); z-index: 1; }
.hero-stack::after { transform: translate(30px, 30px); background: var(--panel-2); z-index: 0; }
.metric-chip {
  position: absolute; bottom: -22px; left: -22px; z-index: 3;
  background: var(--panel); border: 1px solid var(--purple); border-radius: 6px;
  padding: 14px 20px; display: flex; gap: 14px; align-items: center; box-shadow: 0 18px 44px rgba(0,0,0,.55);
}
.metric-chip .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 4px rgba(245,158,11,.2); }
.metric-chip small { color: var(--stone); display: block; font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; }
.metric-chip strong { color: var(--cream); font-family: 'Bitter', serif; font-size: 1.05rem; }

/* Section heads */
.sec-head { max-width: 700px; margin-bottom: 48px; }
.sec-head.center { margin-left: auto; margin-right: auto; }
.sec-head h2 { margin: 14px 0 14px; }

/* Stacked module layers (Layer 01–04) */
.layers { display: grid; gap: 18px; }
.layer-row {
  display: grid; grid-template-columns: 130px 1fr; gap: 28px; align-items: start;
  background: var(--card); border: 1px solid var(--card-line); border-left: 2px solid var(--purple);
  border-radius: 6px; padding: 28px 30px;
  transition: background-color .35s ease, transform .35s ease, border-left-color .35s ease;
}
.layer-row:hover { background: rgba(147,51,234,.07); border-left-color: var(--amber); transform: translateX(6px); }
.layer-row .ln { font-family: 'Bitter', serif; font-size: 1.05rem; color: var(--amber); font-weight: 700; }
.layer-row .ln small { display: block; color: var(--stone); font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; font-family: 'PT Sans', sans-serif; }
.layer-row h3 { margin-bottom: 8px; }
.layer-row p { font-size: .96rem; }

/* Training pipeline infographic */
.pipeline-wrap { display: grid; grid-template-columns: .92fr 1.08fr; gap: 52px; align-items: center; }
.pipeline-wrap img { border-radius: 8px; border: 1px solid var(--card-line); }
.pipe { display: grid; gap: 0; }
.pipe-step { display: grid; grid-template-columns: 46px 1fr; gap: 20px; padding: 0 0 26px; position: relative; }
.pipe-step:last-child { padding-bottom: 0; }
.pipe-step::before {
  content: ""; position: absolute; left: 22px; top: 46px; bottom: -4px; width: 2px; background: var(--card-line);
}
.pipe-step:last-child::before { display: none; }
.pipe-num {
  width: 46px; height: 46px; border-radius: 6px; background: var(--purple-soft); border: 1px solid var(--purple);
  display: grid; place-items: center; font-family: 'Bitter', serif; font-weight: 700; color: var(--amber); z-index: 1;
}
.pipe-step h3 { margin-bottom: 4px; }
.pipe-step p { font-size: .94rem; }

/* Implementation timeline */
.timeline { display: grid; gap: 0; max-width: 880px; }
.tl-item { display: grid; grid-template-columns: 150px 1fr; gap: 30px; padding: 26px 0; border-bottom: 1px solid var(--card-line); }
.tl-item:last-child { border-bottom: none; }
.tl-phase { font-family: 'Bitter', serif; color: var(--amber); font-weight: 700; }
.tl-phase small { display: block; color: var(--stone); font-size: .8rem; font-family: 'PT Sans', sans-serif; }
.tl-item h3 { margin-bottom: 6px; }
.tl-item p { font-size: .95rem; }

/* Services grid */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.svc-card {
  background: var(--card); border: 1px solid var(--card-line); border-left: 2px solid var(--purple);
  border-radius: 6px; padding: 28px;
  transition: background-color .35s ease, transform .35s ease, border-left-color .35s ease;
}
.svc-card:hover { background: rgba(147,51,234,.07); border-left-color: var(--amber); transform: translateY(-5px); }
.svc-card h3 { margin: 12px 0 8px; }
.svc-card p { font-size: .95rem; }

/* Certifications strip */
.cert-strip { background: var(--panel); border-top: 1px solid var(--card-line); border-bottom: 1px solid var(--card-line); }
.cert-row { display: flex; flex-wrap: wrap; gap: 14px; }
.cert-chip {
  border: 1px solid var(--card-line); background: var(--card); border-radius: 4px; padding: 13px 20px;
  font-size: .9rem; color: var(--cream); display: flex; align-items: center; gap: 10px;
}
.cert-chip::before { content: ""; width: 8px; height: 8px; background: var(--amber); border-radius: 50%; flex: 0 0 8px; }

/* Testimonials */
.tcard { background: var(--card); border: 1px solid var(--card-line); border-radius: 6px; padding: 30px; }
.tcard p { color: #E7E5E4; font-family: 'Bitter', serif; font-style: italic; font-size: 1.02rem; }
.tcard .who { display: flex; align-items: center; gap: 14px; margin-top: 20px; }
.tcard .av { width: 46px; height: 46px; border-radius: 6px; background: var(--purple); display: grid; place-items: center; font-weight: 700; color: #fff; font-family: 'Bitter', serif; }
.tcard .who small { color: var(--stone); display: block; }
.tcard .who b { color: var(--cream); }

/* CTA band — purple */
.cta-band { background: var(--purple); border-radius: 10px; padding: clamp(42px, 6vw, 72px); text-align: center; position: relative; overflow: hidden; }
.cta-band::after { content: ""; position: absolute; inset: 0; background: radial-gradient(560px 280px at 84% 16%, rgba(245,158,11,.28), transparent 62%); }
.cta-band > * { position: relative; z-index: 1; }
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,.92); max-width: 580px; margin: 14px auto 28px; }
.cta-band .btn-primary { background-color: var(--midnight); color: #fff; }
.cta-band .btn-primary:hover { background-color: var(--amber); color: var(--midnight); }

/* Footer infobox (home) */
.infobox {
  background: var(--panel); border: 1px solid var(--card-line); border-top: 2px solid var(--amber);
  border-radius: 8px; padding: clamp(28px, 4vw, 44px);
  display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 34px;
}
.infobox h3 { margin-bottom: 10px; }
.infobox p { font-size: .92rem; }
.infobox .ib-list { list-style: none; display: grid; gap: 8px; font-size: .92rem; }
.infobox .ib-list b { color: var(--cream); }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { padding: 26px; border: 1px solid var(--card-line); border-left: 2px solid var(--purple); border-radius: 6px; background: var(--card); }
.stat b { font-family: 'Bitter', serif; font-size: clamp(1.9rem, 4vw, 2.7rem); color: var(--amber); display: block; }
.stat span { color: var(--muted); font-size: .9rem; }

/* Page hero (inner) */
.page-hero { padding-top: 158px; padding-bottom: 54px; position: relative; }
.page-hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(680px 340px at 84% 0%, rgba(147,51,234,.18), transparent 60%); }
.page-hero .wrap { position: relative; z-index: 1; }
.breadcrumb { color: var(--stone); font-size: .86rem; margin-bottom: 12px; }
.breadcrumb a { color: var(--stone); }
.breadcrumb a:hover { color: var(--amber); }

/* Solution catalog cards */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.filter-btn { background-color: var(--card); border: 1px solid var(--card-line); color: var(--cream); padding: 10px 18px; border-radius: 4px; cursor: pointer; font-family: inherit; font-size: .88rem; font-weight: 700; transition: background-color .25s ease, color .25s ease, border-color .25s ease; }
.filter-btn:hover { border-color: var(--amber); color: var(--amber); }
.filter-btn.active { background-color: var(--purple); color: #fff; border-color: var(--purple); }

.sol-card { background: var(--card); border: 1px solid var(--card-line); border-radius: 8px; overflow: hidden; display: flex; flex-direction: column; transition: transform .35s ease, box-shadow .35s ease; }
.sol-card:hover { transform: translateY(-6px); box-shadow: 0 26px 54px rgba(0,0,0,.5); }
.sol-media { position: relative; }
.sol-media img { aspect-ratio: 3/2; object-fit: cover; width: 100%; }
.sol-cat { position: absolute; top: 14px; left: 14px; background: var(--purple); color: #fff; font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; padding: 5px 12px; border-radius: 4px; }
.sol-body { padding: 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; border-left: 2px solid var(--purple); }
.sol-ref { font-family: 'PT Sans', monospace; font-size: .76rem; color: var(--stone); letter-spacing: .04em; }
.sol-meta { list-style: none; font-size: .87rem; color: #D6D3D1; display: grid; gap: 5px; }
.sol-meta li b { color: var(--cream); font-weight: 700; }
.sol-price { font-family: 'Bitter', serif; font-size: 1.3rem; color: var(--cream); font-weight: 700; margin-top: auto; padding-top: 6px; }
.sol-price span { color: var(--amber); font-size: .82rem; font-family: 'PT Sans', sans-serif; display: block; text-transform: uppercase; letter-spacing: .1em; }

/* Split editorial */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }
.split img { border-radius: 8px; border: 1px solid var(--card-line); }

/* About lists */
.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 52px; align-items: center; }
.cert-list { list-style: none; display: grid; gap: 12px; }
.cert-list li { padding: 14px 18px; background: var(--card); border: 1px solid var(--card-line); border-left: 2px solid var(--amber); border-radius: 5px; display: flex; gap: 12px; align-items: center; color: #E7E5E4; }
.cert-list li::before { content: "▰"; color: var(--purple); }

/* Forms */
.form-card { background: var(--card); border: 1px solid var(--card-line); border-radius: 10px; padding: clamp(26px, 4vw, 44px); }
.field { margin-bottom: 20px; }
.field label { display: block; font-weight: 700; margin-bottom: 7px; color: var(--cream); font-size: .92rem; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border-radius: 5px; border: 1px solid var(--card-line);
  background: var(--midnight); color: var(--cream); font-family: inherit; font-size: .96rem; transition: border-color .25s ease, box-shadow .25s ease;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--purple); box-shadow: 0 0 0 3px var(--purple-soft); }
.field textarea { min-height: 130px; resize: vertical; }
.field .err { color: var(--amber); font-size: .82rem; margin-top: 6px; display: none; }
.field.invalid .err { display: block; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--amber); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.success-msg { display: none; text-align: center; padding: 34px 20px; }
.success-msg.show { display: block; animation: peelin .65s ease; }
.success-msg .ic { width: 64px; height: 64px; border-radius: 8px; background: var(--purple); display: grid; place-items: center; margin: 0 auto 18px; font-size: 1.7rem; color: #fff; font-family: 'Bitter', serif; }

/* Contact info cards */
.info-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.info-card { background: var(--card); border: 1px solid var(--card-line); border-left: 2px solid var(--purple); border-radius: 6px; padding: 22px; }
.info-card small { color: var(--stone); text-transform: uppercase; letter-spacing: .14em; font-size: .7rem; }
.info-card p { color: var(--cream); margin-top: 6px; }

/* Legal / prose */
.prose { max-width: 840px; }
.prose h2 { margin: 40px 0 14px; font-size: clamp(1.4rem, 2.6vw, 1.85rem); }
.prose h3 { margin: 26px 0 10px; color: var(--amber); }
.prose p, .prose li { color: #D6D3D1; margin-bottom: 12px; }
.prose ul, .prose ol { padding-left: 22px; margin-bottom: 14px; }
.prose strong { color: var(--cream); }
.prose a { color: var(--amber); }

/* Footer */
footer.site { background: var(--panel); border-top: 1px solid var(--card-line); padding: 64px 0 28px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 38px; }
.foot-grid h4 { color: var(--cream); margin-bottom: 16px; font-size: 1rem; }
.foot-links { list-style: none; display: grid; gap: 9px; }
.foot-links a { color: var(--muted); font-size: .9rem; }
.foot-links a:hover { color: var(--amber); }
.foot-about p { color: var(--muted); font-size: .9rem; margin-top: 14px; }
.foot-contact p { color: var(--muted); font-size: .88rem; margin-bottom: 8px; }
.foot-contact b { color: var(--cream); }
.foot-bottom { border-top: 1px solid var(--card-line); margin-top: 46px; padding-top: 22px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--stone); font-size: .84rem; }

/* Cookie banner */
.cookie { position: fixed; bottom: 24px; left: 24px; right: 24px; max-width: 560px; margin: 0 auto; background: var(--panel-2); border: 1px solid var(--purple); border-radius: 8px; padding: 20px 24px; z-index: 200; display: none; box-shadow: 0 22px 54px rgba(0,0,0,.6); }
.cookie.show { display: block; animation: peelin .5s ease; }
.cookie p { font-size: .88rem; color: #D6D3D1; }
.cookie .row { display: flex; gap: 14px; margin-top: 14px; align-items: center; }
.cookie .btn { padding: 10px 22px; font-size: .88rem; }
.cookie a { font-weight: 700; }

/* Scroll animations — layer peel + fade (progressive enhancement) */
.slide-up, .fade-in { opacity: 1; transform: none; transition: opacity .65s ease, transform .65s ease; }
html.js .slide-up { opacity: 0; transform: translateY(34px) scale(.98); }
html.js .fade-in { opacity: 0; }
html.js .slide-up.visible, html.js .fade-in.visible { opacity: 1; transform: translateY(0) scale(1); }
@keyframes peelin { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* Responsive */
@media (max-width: 1000px) {
  .hero-grid, .split, .about-grid, .pipeline-wrap { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .infobox { grid-template-columns: 1fr 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav-links { position: fixed; top: 76px; left: 0; right: 0; background: var(--panel-2); flex-direction: column; padding: 24px; gap: 18px; border-bottom: 1px solid var(--card-line); transform: translateY(-150%); transition: transform .35s ease; }
  .nav-links.open { transform: translateY(0); }
  .burger { display: flex; }
  .nav-cta .btn { display: none; }
  .grid-3, .grid-2, .info-grid, .form-row, .infobox { grid-template-columns: 1fr; }
  .layer-row { grid-template-columns: 1fr; gap: 12px; }
  .tl-item { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 520px) {
  .grid-3 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
}