/* ============================================================
   DATALINE UI KIT — site styles
   Extends ../../colors_and_type.css. Mirrors the inline CSS
   from the live site (index.html / data.html).
   ============================================================ */

body { background: var(--bg); overflow-x: hidden; }

/* ────────────── HEADER ────────────── */
.site-header { position: sticky; top: 0; z-index: 80; background: rgba(10,10,10,0.85); backdrop-filter: blur(8px); border-bottom: 1px solid var(--hairline); }
.header-inner { max-width: var(--max-content); margin: 0 auto; padding: 1.25rem var(--pad); display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 0.6rem; font-weight: 500; font-size: 1.05rem; letter-spacing: -0.01em; }
.brand-mark { width: 22px; height: 22px; flex-shrink: 0; }
.nav { display: flex; align-items: center; font-size: 0.92rem; }
.nav-item-wrap { position: relative; }
.nav-trigger { background: none; border: 0; color: var(--ink); padding: 0.5rem 0.85rem; font-family: var(--font-main); font-size: 0.92rem; font-weight: 400; cursor: pointer; display: inline-flex; align-items: center; gap: 0.35rem; letter-spacing: -0.005em; transition: opacity .2s; }
.nav-trigger:hover { opacity: 0.6; }
.nav-caret { width: 8px; height: 8px; opacity: 0.5; transition: transform .2s; }
.nav-item-wrap:hover .nav-caret { transform: rotate(180deg); }
.nav-panel { position: absolute; top: 100%; left: 0; padding-top: 0.5rem; visibility: hidden; opacity: 0; transform: translateY(4px); transition: opacity .18s, transform .18s; z-index: 100; }
.nav-panel.right { left: auto; right: 0; }
.nav-item-wrap:hover .nav-panel { visibility: visible; opacity: 1; transform: translateY(0); }
.nav-panel-inner { background: var(--bg-elev); border: 1px solid var(--hairline-strong); padding: 0.5rem; min-width: 240px; }
.nav-panel-inner.mega { min-width: 560px; }
.nav-link { display: block; padding: 0.7rem 0.9rem; transition: background .15s; cursor: pointer; }
.nav-link:hover { background: rgba(232,230,224,0.04); }
.nav-link-title { font-weight: 500; font-size: 0.92rem; }
.nav-link-sub { color: var(--ink-dim); font-size: 0.78rem; margin-top: 0.15rem; }
.nav-link-flag { font-family: var(--font-mono); font-size: 0.62rem; color: var(--green); text-transform: uppercase; letter-spacing: 0.06em; margin-left: 0.4rem; }
.mega-flag-row { padding: 0.7rem 0.9rem 0.5rem; border-bottom: 1px solid var(--hairline); margin-bottom: 0.35rem; }
.mega-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.25rem; }
.header-cta { display: flex; align-items: center; gap: 1rem; font-size: 0.9rem; }

/* ────────────── BUTTONS ────────────── */
.btn-pill { border: 1px solid var(--ink); padding: 0.55rem 1.1rem; font-family: var(--font-main); font-size: 0.85rem; font-weight: 500; letter-spacing: -0.005em; transition: all .2s; cursor: pointer; background: transparent; color: var(--ink); display: inline-flex; align-items: center; gap: 0.4rem; }
.btn-pill:hover { background: var(--ink); color: var(--bg); }
.btn-pill.primary { background: var(--ink); color: var(--bg); }
.btn-pill.primary:hover { background: var(--green); border-color: var(--green); color: #06140e; }
.btn-pill.lg { padding: 1rem 2.1rem; font-size: 1.05rem; }

/* ────────────── HERO ────────────── */
.hero { position: relative; min-height: 560px; border-bottom: 1px solid var(--hairline); overflow: hidden; cursor: crosshair; padding: 5rem var(--pad) 4rem; max-width: var(--max-content); margin: 0 auto; box-sizing: border-box; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.55; }
.hero-canvas::before, .hero-canvas::after { content: ""; position: absolute; inset: 0; background-image: radial-gradient(circle at 18% 30%, rgba(52,211,153,0.10) 0, transparent 28%), radial-gradient(circle at 78% 70%, rgba(52,211,153,0.08) 0, transparent 35%); }
.hero-text { position: relative; z-index: 5; max-width: 75vw; }
.hero-h1 { font-family: var(--font-main); font-weight: 300; font-size: clamp(2.5rem, 6vw, 5.5rem); line-height: 1.05; letter-spacing: -0.025em; color: var(--ink); }
.hero-h1 .accent { color: var(--green); font-weight: 300; }
.hero-sub { max-width: 60ch; font-size: 1.15rem; color: rgba(232,230,224,0.62); margin-top: 1.5rem; padding: 1.25rem 1.5rem; background: rgba(0,0,0,0.32); border: 1px solid rgba(52,211,153,0.20); backdrop-filter: blur(10px); line-height: 1.4; letter-spacing: -0.01em; }
.hero-sub b { color: var(--ink); font-weight: 500; }
.hero-cta-row { margin-top: 1.5rem; display: flex; gap: 0.85rem; flex-wrap: wrap; position: relative; z-index: 5; }
.hero-meta { position: absolute; right: var(--pad); top: 2rem; z-index: 5; font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-muted); text-align: right; line-height: 1.7; }
.hero-meta .live { color: var(--green); }
@keyframes blink-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
.hero-meta .live::before { content: '●'; margin-right: 0.4rem; animation: blink-pulse 1.6s infinite; }

/* hero data-grid background (CSS-only replacement for canvas) */
.hero-bg { position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(52,211,153,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(52,211,153,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at 60% 60%, #000 30%, transparent 80%);
          mask-image: radial-gradient(ellipse at 60% 60%, #000 30%, transparent 80%);
}
.hero-bg::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 75% 80%, rgba(52,211,153,0.15), transparent 35%); }

/* ────────────── SECTIONS ────────────── */
.section { border-bottom: 1px solid var(--hairline); }
.section-inner { max-width: var(--max-content); margin: 0 auto; padding: 5rem var(--pad); }
.section-header { display: flex; align-items: baseline; justify-content: space-between; gap: 2rem; margin-bottom: 3rem; flex-wrap: wrap; }
.section-eyebrow { font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-dim); letter-spacing: 0.08em; text-transform: uppercase; }
.section-title { font-family: var(--font-main); font-weight: 300; font-size: clamp(1.8rem, 3.5vw, 2.8rem); letter-spacing: -0.025em; line-height: 1.15; max-width: 22ch; margin-top: 0.5rem; }
.section-lead { color: var(--ink-dim); font-size: 1rem; max-width: 50ch; margin-top: 1rem; }
.section-num { font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-muted); letter-spacing: 0.08em; }

/* ────────────── TRUST STRIP ────────────── */
.trust { padding: 4rem var(--pad); border-bottom: 1px solid var(--hairline); }
.trust-inner { max-width: var(--max-content); margin: 0 auto; }
.trust-head { font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-dim); letter-spacing: 0.08em; text-align: center; margin-bottom: 2.5rem; text-transform: uppercase; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hairline); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.trust-cell { background: var(--bg); padding: 2.5rem 1.5rem; text-align: left; }
.trust-num { font-family: var(--font-main); font-weight: 300; font-size: clamp(2.5rem, 5vw, 4.5rem); line-height: 1; letter-spacing: -0.04em; color: var(--ink); }
.trust-num .unit { color: var(--ink-dim); font-size: 0.45em; }
.trust-label { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 1rem; }

/* ────────────── STACK ────────────── */
.stack-flagship { border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); padding: 3.5rem 0; display: grid; grid-template-columns: auto 1fr auto; gap: 3rem; align-items: start; transition: background .2s; }
.stack-flagship:hover { background: rgba(232,230,224,0.02); }
.stack-mark { font-family: var(--font-mono); font-size: 1.4rem; color: var(--green); border: 1px solid var(--green-dim); padding: 0.7rem 0.9rem; display: inline-flex; align-items: center; gap: 0.35rem; }
.stack-flag-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--green); text-transform: uppercase; letter-spacing: 0.08em; }
.stack-flag-name { font-size: 2.2rem; font-weight: 300; letter-spacing: -0.025em; margin-top: 0.4rem; line-height: 1.1; }
.stack-flag-desc { color: var(--ink-dim); font-size: 1.05rem; margin-top: 0.8rem; max-width: 56ch; }
.stack-flag-bullets { margin-top: 1.4rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem 2rem; font-size: 0.88rem; }
.stack-flag-bullets li { display: flex; gap: 0.6rem; color: var(--ink-dim); }
.stack-flag-bullets li::before { content: '+'; color: var(--green); font-family: var(--font-mono); flex-shrink: 0; }
.stack-flag-cta { align-self: end; font-family: var(--font-mono); font-size: 0.85rem; color: var(--ink); border-bottom: 1px solid transparent; padding-bottom: 2px; transition: border-color .2s; }
.stack-flagship:hover .stack-flag-cta { border-bottom-color: var(--ink); }
.stack-also-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 3rem; margin-bottom: 1.5rem; }
.stack-rest { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--hairline); }
.stack-card { padding: 2rem 1.75rem; border-right: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); transition: background .2s; }
.stack-card:last-child { border-right: none; }
.stack-card:hover { background: rgba(232,230,224,0.03); }
.stack-card-mark { color: var(--ink); margin-bottom: 1.4rem; opacity: 0.9; }
.stack-card-cat { font-family: var(--font-mono); font-size: 0.65rem; color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.4rem; }
.stack-card-name { font-size: 1.4rem; font-weight: 300; letter-spacing: -0.02em; }
.stack-card-desc { color: var(--ink-dim); font-size: 0.92rem; margin-top: 0.7rem; line-height: 1.45; }
.stack-card-for { margin-top: 1.5rem; font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-muted); }

/* ────────────── PIPELINE ────────────── */
.pipeline-grid { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.pipeline-step { padding: 2rem 1.5rem; border-right: 1px solid var(--hairline); transition: background .25s ease, transform .25s ease, box-shadow .25s ease; cursor: default; }
.pipeline-step:last-child { border-right: none; }
.pipeline-step:hover { background: rgba(52,211,153,0.05); transform: scale(1.06); z-index: 5; box-shadow: 0 0 32px rgba(52,211,153,0.18); }
.step-num { font-family: var(--font-main); font-weight: 300; font-size: 3rem; line-height: 1; letter-spacing: -0.04em; color: var(--ink-dim); transition: color .25s, text-shadow .25s; }
.pipeline-step:hover .step-num { color: var(--green); text-shadow: 0 0 14px rgba(52,211,153,0.55); }
.step-title { font-size: 1.25rem; font-weight: 400; margin-top: 1.25rem; letter-spacing: -0.01em; }
.step-desc { color: var(--ink-dim); font-size: 0.86rem; margin-top: 0.5rem; line-height: 1.5; }
.step-extra { margin-top: 1rem; font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-muted); line-height: 1.7; }
.step-extra .accent { color: var(--green); }

/* ────────────── WHY ────────────── */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--hairline); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.why-cell { background: var(--bg); padding: 2rem 1.5rem; transition: background .2s; }
.why-cell:hover { background: rgba(232,230,224,0.02); }
.why-cat { font-family: var(--font-mono); font-size: 0.65rem; color: var(--green); text-transform: uppercase; letter-spacing: 0.08em; }
.why-title { font-size: 1.15rem; font-weight: 400; letter-spacing: -0.01em; margin-top: 0.6rem; }
.why-desc { color: var(--ink-dim); font-size: 0.9rem; margin-top: 0.5rem; line-height: 1.5; }

/* ────────────── CODE FRAME ────────────── */
.code-frame { margin-top: 1.5rem; border: 1px solid var(--hairline); }
.code-tabs { display: flex; border-bottom: 1px solid var(--hairline); font-family: var(--font-mono); font-size: 0.78rem; }
.code-tab { padding: 0.7rem 1.1rem; color: var(--ink-dim); cursor: pointer; transition: color .15s; background: none; border: 0; font-family: inherit; font-size: inherit; }
.code-tab:hover { color: var(--ink); }
.code-tab.active { color: var(--green); border-bottom: 1px solid var(--green); margin-bottom: -1px; }
.code-block { padding: 1.5rem; font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.7; color: var(--ink); white-space: pre; overflow-x: auto; min-height: 220px; }
.code-comment { color: var(--ink-muted); }
.code-string  { color: var(--green); }
.term-cursor  { display: inline-block; width: 0.55em; height: 1em; background: var(--green); vertical-align: text-bottom; margin-left: 0.15em; animation: blink-pulse 1.05s steps(1) infinite; }

/* ────────────── FAQ ────────────── */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-top: 1px solid var(--hairline); }
.faq-item:last-child { border-bottom: 1px solid var(--hairline); }
.faq-summary { cursor: pointer; padding: 1.5rem 0; display: flex; justify-content: space-between; align-items: center; font-size: 1.05rem; font-weight: 400; letter-spacing: -0.01em; transition: opacity .2s; background: none; border: 0; width: 100%; text-align: left; color: var(--ink); font-family: inherit; }
.faq-summary:hover { opacity: 0.7; }
.faq-summary .plus { font-family: var(--font-mono); color: var(--ink-dim); font-size: 1.2rem; transition: transform .25s, color .25s; }
.faq-item.open .faq-summary .plus { transform: rotate(45deg); color: var(--green); }
.faq-body { color: var(--ink-dim); font-size: 0.95rem; padding: 0 0 1.5rem; max-width: 64ch; line-height: 1.6; overflow: hidden; max-height: 0; transition: max-height .3s ease; }
.faq-item.open .faq-body { max-height: 220px; }

/* ────────────── AGENT STRIP ────────────── */
.agent-strip { padding: 3rem var(--pad); border-bottom: 1px solid var(--hairline); display: flex; gap: 2rem; align-items: center; justify-content: space-between; flex-wrap: wrap; max-width: var(--max-content); margin: 0 auto; }
.agent-strip-text { display: flex; gap: 1.25rem; align-items: flex-start; }
.agent-strip-mark { font-family: var(--font-mono); border: 1px solid var(--green-dim); color: var(--green); padding: 0.6rem 0.85rem; font-size: 1rem; flex-shrink: 0; }
.agent-strip h3 { font-size: 1.1rem; font-weight: 400; letter-spacing: -0.01em; }
.agent-strip p { color: var(--ink-dim); font-size: 0.9rem; margin-top: 0.3rem; max-width: 60ch; }
.agent-strip code { font-family: var(--font-mono); color: var(--green); }

/* ────────────── BIG CTA ────────────── */
.big-cta { padding: 8rem var(--pad); text-align: center; border-bottom: 1px solid var(--hairline); }
.big-cta h2 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 300; letter-spacing: -0.03em; line-height: 1.05; }
.big-cta h2 .accent { color: var(--green); font-weight: 300; }
.big-cta p { margin-top: 1.5rem; color: var(--ink-dim); }
.big-cta-row { margin-top: 2rem; display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

/* ────────────── FOOTER ────────────── */
.site-footer { padding: 4rem var(--pad) 2rem; }
.footer-grid { max-width: var(--max-content); margin: 0 auto; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 3rem; padding-bottom: 3rem; border-bottom: 1px solid var(--hairline); }
.footer-bio { color: var(--ink); font-size: 0.95rem; max-width: 32ch; line-height: 1.55; margin-top: 1rem; }
.footer-bio .subline { color: var(--ink-dim); font-size: 0.85rem; margin-top: 0.4rem; display: block; }
.footer-col { display: flex; flex-direction: column; gap: 0.6rem; font-size: 0.88rem; }
.footer-col-title { font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-dim); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 0.4rem; background: linear-gradient(90deg, #10b981 0%, #34d399 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.footer-col-title.plain { background: none; -webkit-text-fill-color: var(--ink-dim); color: var(--ink-dim); }
.footer-col a { color: var(--ink-dim); transition: color .15s; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom { max-width: var(--max-content); margin: 1.5rem auto 0; display: flex; justify-content: space-between; align-items: center; font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-muted); flex-wrap: wrap; gap: 0.75rem; }
.footer-bottom .agent-callout { color: var(--ink-dim); }
.footer-bottom .agent-callout a { color: var(--green); }

/* ────────────── RESPONSIVE ────────────── */
@media (max-width: 1024px) {
  .nav { display: none; }
  .stack-flagship { grid-template-columns: 1fr; }
  .stack-flag-bullets { grid-template-columns: 1fr; }
  .stack-rest { grid-template-columns: 1fr; }
  .pipeline-grid { grid-template-columns: 1fr 1fr; }
  .pipeline-step { border-right: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: 1fr; }
}