/* DB Compute. Black ground, Newsreader headlines, Plex Mono labels, hard edges, one warm accent. */

:root {
  --bg: #000;
  --panel: #111110;
  --panel-2: #191918;
  --text: #eeeeec;
  --muted: #b5b3ad;
  --dim: #7a7873;
  --line: #262522;
  --line-strong: #3b3a37;
  --paper: #eeeeec;
  --ink: #000;
  --danger: #f87171;
  --ok: #4ade80;
  --accent: #ff6a3d;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --pad: clamp(20px, 4vw, 56px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; color-scheme: dark; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--mono); font-size: 14px; font-weight: 300; line-height: 1.5;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }
p { margin: 0; }

h1, h2, h3 { font-family: var(--serif); font-weight: 300; margin: 0; line-height: 1.04; letter-spacing: -0.02em; font-variation-settings: "opsz" 72; }
h1 { font-size: clamp(2.8rem, 5.4vw, 4.6rem); }
h2 { font-size: clamp(2rem, 3.6vw, 2.9rem); }
h3 { font-size: 1.6rem; letter-spacing: -0.01em; }
h1 em, h2 em { font-style: italic; font-weight: 300; color: var(--muted); }
.lead, .sub, .how-list p, .faq p, .kv-list .v, .storage-options .v, .g-fit {
  font-family: var(--serif); font-weight: 300; color: var(--muted); letter-spacing: -0.01em; line-height: 1.3;
}
.lead { font-size: clamp(1.25rem, 1.8vw, 1.5rem); margin-top: 1.6rem; max-width: 36ch; }
.sub { font-size: 1.25rem; margin-top: 1rem; max-width: 52ch; }

.wrap { padding-left: var(--pad); padding-right: var(--pad); }
.eyebrow { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--dim); margin-bottom: 1rem; }
.fineprint { font-size: 11px; color: var(--dim); line-height: 1.6; margin-top: 1.25rem; }
.fineprint strong { color: var(--text); font-weight: 400; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 14px 18px; border: 1px solid var(--line-strong); border-radius: 0; background: transparent;
  color: var(--text); font-family: var(--mono); font-size: 13px; font-weight: 400;
  text-transform: uppercase; letter-spacing: 0.04em; line-height: 1; cursor: pointer; white-space: nowrap;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}
.btn:hover { border-color: var(--text); }
.btn:focus-visible { outline: 1px solid var(--paper); outline-offset: 3px; }
.btn-primary { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn-primary:hover { background: #fff; border-color: #fff; }
.btn-sm { padding: 9px 12px; font-size: 11px; }
.btn-block { width: 100%; }
.btn.back::before { content: "\2190"; margin-right: 8px; opacity: 0.6; }
.btn[disabled] { opacity: 0.6; cursor: wait; }
.btn .count { background: var(--ink); color: var(--paper); font-size: 10px; padding: 3px 6px; line-height: 1; }
.add-gpu::after { content: "+"; margin-left: 12px; opacity: 0.6; }
.add-gpu.added { background: var(--accent); color: var(--ink); border-color: var(--accent); }
.add-gpu.added::after { content: "\2713"; opacity: 1; }
.textlink { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); border-bottom: 1px solid var(--line-strong); padding-bottom: 3px; }
.textlink:hover { color: var(--text); border-color: var(--text); }

/* Top bar */
.topbar { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; gap: 2.5rem; height: 60px; padding: 0 var(--pad); position: relative; }
.brand { font-family: var(--serif); font-style: italic; font-weight: 400; font-size: 22px; letter-spacing: -0.01em; white-space: nowrap; font-variation-settings: "opsz" 24; }
.nav-links { display: flex; gap: 2rem; margin-left: auto; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line-strong); padding: 8px 12px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; cursor: pointer; }
@media (max-width: 860px) {
  .nav { gap: 1rem; }
  .nav-links { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--bg); border-bottom: 1px solid var(--line); padding: 0 var(--pad); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 0; border-top: 1px solid var(--line); }
  .nav-cta { margin-left: auto; }
  .nav-toggle { display: block; }
}

/* Hero: copy left, rack right */
.hero { display: grid; grid-template-columns: 1.05fr 0.95fr; min-height: calc(100vh - 61px); border-bottom: 1px solid var(--line); }
.hero-copy { padding: clamp(48px, 7vw, 104px) var(--pad); display: flex; flex-direction: column; justify-content: center; }
.hero-actions { display: flex; align-items: center; gap: 1.75rem; margin-top: 2.5rem; flex-wrap: wrap; }
.hero-visual { position: relative; overflow: hidden; border-left: 1px solid var(--line); }
.hero-visual canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-visual { height: 380px; border-left: 0; border-top: 1px solid var(--line); }
}

/* Spec bar */
.specbar { border-bottom: 1px solid var(--line); }
.specbar-grid { display: grid; grid-template-columns: 1fr 1fr 1fr 2.2fr; }
.specbar .stat { padding: 20px var(--pad) 20px 0; border-right: 1px solid var(--line); margin-right: 1.5rem; }
.specbar .stat:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.stat b { display: block; font-weight: 400; font-size: 15px; letter-spacing: 0; }
.stat small { display: block; margin-top: 6px; font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--dim); }
.stat.models b { font-size: 12px; color: var(--muted); letter-spacing: 0.04em; line-height: 1.7; }
@media (max-width: 900px) {
  .specbar-grid { grid-template-columns: 1fr 1fr; }
  .specbar .stat { border-right: 0; border-bottom: 1px solid var(--line); margin-right: 0; padding: 16px 0; }
  .specbar .stat:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 1rem; }
  .specbar .stat:nth-child(even) { padding-left: 1rem; }
  .stat.models { grid-column: 1 / -1; border-right: 0 !important; padding-left: 0 !important; border-bottom: 0; }
}

/* Sections */
.section { padding: clamp(64px, 9vw, 120px) 0; border-bottom: 1px solid var(--line); }
.section-head { max-width: 60ch; margin-bottom: 2.5rem; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.how-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 4rem; align-items: start; }
@media (max-width: 860px) { .two-col, .how-grid { grid-template-columns: 1fr; gap: 2.5rem; } }

/* Catalog rows */
.gpu-rows { border-top: 1px solid var(--line-strong); }
.gpu-row { display: grid; grid-template-columns: 1.4fr 1fr 1.1fr 2fr auto; gap: 1.5rem; align-items: center; padding: 18px 0; border-bottom: 1px solid var(--line); }
.gpu-head { padding: 10px 0; font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--dim); }
.g-model { display: flex; align-items: center; gap: 12px; }
.g-name { font-size: 15px; font-weight: 400; }
.tag { font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase; padding: 4px 6px; line-height: 1; flex: none; border: 1px solid var(--line-strong); color: var(--muted); }
.g-mem { color: var(--muted); }
.g-form { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--dim); }
.g-fit { font-size: 1.1rem; }
.g-add { justify-self: end; }
@media (max-width: 900px) {
  .gpu-head { display: none; }
  .gpu-row { grid-template-columns: 1fr auto; grid-template-areas: "model add" "mem add" "form add" "fit fit"; gap: 4px 1rem; }
  .g-model { grid-area: model; } .g-mem { grid-area: mem; } .g-form { grid-area: form; } .g-fit { grid-area: fit; margin-top: 8px; } .g-add { grid-area: add; align-self: start; }
}

/* Storage strip */
.storage { background: var(--panel); }
.storage-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.storage-grid .btn { margin-top: 2rem; }
.storage-options, .kv-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-strong); }
.storage-options li, .kv-list li { display: grid; grid-template-columns: 150px 1fr; gap: 1.5rem; padding: 16px 0; border-bottom: 1px solid var(--line); }
.storage-options .k, .kv-list .k { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; padding-top: 3px; }
.storage-options .v, .kv-list .v { font-size: 1.1rem; }
@media (max-width: 860px) { .storage-grid { grid-template-columns: 1fr; gap: 2.5rem; } .storage-options li, .kv-list li { grid-template-columns: 1fr; gap: 6px; } }

/* How it works */
.how-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-strong); }
.how-list li { display: grid; grid-template-columns: 56px 1fr; gap: 1rem; padding: 24px 0; border-bottom: 1px solid var(--line); }
.how-list .num { font-size: 12px; color: var(--accent); padding-top: 6px; }
.how-list h3 { margin-bottom: 0.5rem; }
.how-list p { font-size: 1.15rem; }
.how-list.compact li { padding: 14px 0; }
.how-list.compact p { color: var(--text); }

/* Plain list */
.plain-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-strong); }
.plain-list li { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; }

/* FAQ */
.faq { border-top: 1px solid var(--line-strong); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 18px 0; font-size: 13px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--dim); }
.faq details[open] summary::after { content: "\2212"; }
.faq p { font-size: 1.15rem; padding-bottom: 20px; max-width: 60ch; }

/* Statement */
.statement { background: var(--panel); }
.statement h2 { font-size: clamp(2.4rem, 5vw, 4.2rem); max-width: 16ch; }
.statement .btn { margin-top: 2.5rem; }

/* Quote form: heading left, card right */
.quote-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 4rem; align-items: start; }
.quote-intro { position: sticky; top: 84px; }
.quote-col { min-width: 0; }
.quote-card { border: 1px solid var(--line-strong); background: var(--panel); padding: clamp(18px, 2.5vw, 32px); }
@media (max-width: 900px) { .quote-grid { grid-template-columns: 1fr; gap: 2rem; } .quote-intro { position: static; } }
.stepper { list-style: none; padding: 0 0 1.5rem; margin: 0 0 1.75rem; display: flex; gap: 2rem; border-bottom: 1px solid var(--line); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--dim); }
.stepper li { display: flex; gap: 10px; }
.stepper li span { color: var(--dim); }
.stepper li.active { color: var(--text); }
.stepper li.active span { color: var(--accent); }
.stepper li.done { color: var(--muted); }

fieldset.step { border: 0; padding: 0; margin: 0; min-width: 0; }
legend { font-family: var(--serif); font-weight: 300; font-size: 2rem; letter-spacing: -0.02em; padding: 0; margin-bottom: 1.5rem; font-variation-settings: "opsz" 48; }
.hint { font-size: 12px; color: var(--dim); margin: -0.75rem 0 1.25rem; }
.field { display: flex; flex-direction: column; gap: 10px; margin-bottom: 1.5rem; min-width: 0; }
.field .hint { margin: -4px 0 2px; }
.field > label, .field .label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); }
.field label em, .field .label em { font-style: normal; color: var(--dim); margin-left: 8px; letter-spacing: 0.06em; }
.field label em.req { color: var(--accent); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1.5rem; }
@media (max-width: 640px) { .grid-2 { grid-template-columns: 1fr; } }

input[type="text"], input[type="email"], input[type="tel"], textarea {
  width: 100%; background: var(--bg); color: var(--text); border: 1px solid var(--line-strong); border-radius: 0;
  padding: 13px 14px; font: inherit; font-size: 14px; transition: border-color 0.12s ease;
}
textarea { resize: vertical; min-height: 72px; }
input::placeholder, textarea::placeholder { color: var(--dim); }
input:focus, textarea:focus { outline: none; border-color: var(--paper); }
.field.invalid input, .field.invalid textarea { border-color: var(--danger); }
.field.invalid .chip-row, .field.invalid .choice-grid { outline: 1px solid var(--danger); outline-offset: 6px; }
.error { color: var(--danger); font-size: 11px; }
.error:empty { display: none; }

/* GPU tiles */
.choice-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(128px, 1fr)); gap: 8px; }
.choice { position: relative; cursor: pointer; }
.choice input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.choice-body { display: flex; flex-direction: column; gap: 4px; min-height: 100%; padding: 12px 14px; border: 1px solid var(--line-strong); background: var(--bg); transition: border-color 0.12s ease, background 0.12s ease, color 0.12s ease; }
.choice-title { font-size: 12px; font-weight: 400; text-transform: uppercase; letter-spacing: 0.06em; }
.choice-sub { font-size: 11px; color: var(--dim); }
.choice:hover .choice-body { border-color: var(--text); }
.choice input:checked + .choice-body { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.choice input:checked + .choice-body .choice-sub { color: #55534f; }
.choice input:focus-visible + .choice-body { outline: 1px solid var(--paper); outline-offset: 3px; }

/* Chips */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.chip span { display: inline-flex; align-items: center; min-height: 38px; padding: 9px 13px; border: 1px solid var(--line-strong); background: var(--bg); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; user-select: none; transition: border-color 0.12s ease, background 0.12s ease, color 0.12s ease; }
.chip:hover span { border-color: var(--text); }
.chip input:checked + span { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.chip input:focus-visible + span { outline: 1px solid var(--paper); outline-offset: 3px; }

.storage-only { border: 1px solid var(--line-strong); padding: 18px 18px 4px; margin-bottom: 1.5rem; }
.storage-only .subhead { margin-bottom: 1.25rem; }
.storage-only .subhead .hint { margin: 6px 0 0; }
.storage-only { background: var(--panel); }
.storage-only .choice-body, .storage-only .chip span { background: var(--bg); }
.storage-only .chip input:checked + span { background: var(--paper); }

.step-actions { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-top: 1.75rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
@media (max-width: 520px) {
  .step-actions { flex-wrap: wrap; }
  .step-actions .btn { flex: 1 1 auto; }
  .confirm .step-actions { flex-direction: column-reverse; align-items: stretch; }
}
.summary { padding: 14px 16px; border: 1px solid var(--line-strong); font-size: 12px; color: var(--muted); line-height: 1.6; }
.summary strong { color: var(--accent); font-weight: 400; }
.summary:empty { display: none; }
.consent-note { text-align: right; margin-top: 0.75rem; }
@media (max-width: 640px) { .consent-note { text-align: left; } }
.form-status { font-size: 12px; margin-top: 0.75rem; }
.form-status.err { color: var(--danger); }
.form-status.ok { color: var(--ok); }
.form-status:empty { display: none; }
.hp { position: absolute; left: -9999px; top: -9999px; height: 0; width: 0; overflow: hidden; }

/* Email confirm */
.confirm { margin-top: 1.5rem; border: 1px solid var(--accent); padding: 20px; background: var(--bg); }
.confirm .label { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); }
.confirm-email { font-family: var(--serif); font-size: clamp(1.4rem, 2.6vw, 2rem); letter-spacing: -0.02em; margin: 10px 0 4px; overflow-wrap: anywhere; }
.confirm .hint { margin: 0; }
.confirm .step-actions { margin-top: 1.25rem; padding-top: 1.25rem; }

/* Success */
.success h3 { font-size: 2.2rem; margin: 0.25rem 0 0.75rem; }
.success .how-list { margin-top: 1.5rem; }

/* Footer */
.footer { padding: 48px 0 32px; }
.footer-grid { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; align-items: flex-start; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.footer-links a:hover { color: var(--text); }
.legal { margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); font-size: 11px; color: var(--dim); }

section[id], main[id] { scroll-margin-top: 72px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}