/* =========================================================================
   Shipsy AI — deep technical architecture page
   Inherits the design system from ../styles.css
   ========================================================================= */

.ai-body {
  background: var(--bg-0);
  min-height: 100vh;
}

/* --------------- Top bar --------------- */
.ai-topbar {
  position: sticky; top: 0; z-index: 30;
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 24px;
  padding: 14px 28px;
  background: rgba(7,9,13,0.72);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.ai-topbar-left { display: flex; align-items: center; gap: 14px; }
.ai-brand {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--ink); font-weight: 600;
}
.ai-brand svg { color: var(--orange); }
.ai-divider { width: 1px; height: 18px; background: var(--line-2); }
.ai-eyebrow {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.08em;
  color: var(--ink-mute); text-transform: uppercase;
}
.ai-nav { display: flex; justify-content: center; gap: 24px; }
.ai-nav a {
  font-size: 13.5px; color: var(--ink-mute);
  transition: color .15s ease;
}
.ai-nav a:hover { color: var(--ink); }
.ai-back {
  font-family: var(--f-sans); font-size: 13px;
  padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px;
  color: var(--ink-mute); background: rgba(255,255,255,0.025);
  transition: color .15s ease, border-color .15s ease;
}
.ai-back:hover { color: var(--ink); border-color: var(--line-2); }

.ai-main { max-width: 1320px; margin: 0 auto; padding: 0 28px 64px; }

/* --------------- Hero --------------- */
.ai-hero {
  position: relative; padding: 80px 0 56px;
  border-bottom: 1px solid var(--line);
}
.ai-hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(50% 60% at 20% 10%, rgba(237,90,42,0.10), transparent 60%),
    radial-gradient(40% 50% at 90% 30%, rgba(109,184,255,0.05), transparent 60%);
}
.ai-hero-inner { position: relative; display: flex; flex-direction: column; gap: 24px; }
.ai-tag {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--orange); text-transform: uppercase;
  align-self: flex-start;
}
.ai-hero-h {
  font-family: var(--f-serif); font-weight: 400;
  font-size: clamp(48px, 6vw, 84px); line-height: 1.0; letter-spacing: -0.02em;
  color: var(--ink);
}
.ai-hero-h em { font-style: italic; color: var(--orange); }
.ai-hero-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.ai-hero-chip {
  font-family: var(--f-mono); font-size: 11px;
  padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px;
  background: rgba(255,255,255,0.025); color: var(--ink);
  letter-spacing: 0.04em;
}
.ai-hero-sub {
  font-size: 19px; line-height: 1.45; color: var(--ink-mute);
  max-width: 720px; margin-top: 4px;
}
.ai-hero-sub em { color: var(--orange); font-style: italic; font-weight: 500; }

.ai-hero-kpis {
  margin-top: 24px;
  display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px;
}

/* Manifesto block — section variant */
.ai-manifesto .ai-section-h { font-size: clamp(36px, 4.8vw, 60px); line-height: 1.04; }
.ai-manifesto-foot {
  margin-top: 32px; padding: 20px 24px;
  border: 1px dashed var(--line-2); border-radius: var(--r);
  background: rgba(255,255,255,0.02);
  font-family: var(--f-serif); font-style: italic;
  font-size: 18px; line-height: 1.5; color: var(--ink);
  text-align: center; max-width: 920px; margin-left: auto; margin-right: auto;
}
.ai-manifesto-foot em { color: var(--orange); }
.ai-hero-kpi {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r);
  padding: 18px 18px;
  display: flex; flex-direction: column; gap: 6px;
}
.ai-hero-kpi .kpi-k {
  font-family: var(--f-serif); font-size: 32px; line-height: 1; color: var(--orange);
}
.ai-hero-kpi .kpi-v { font-size: 12px; color: var(--ink-mute); }

/* --------------- Sections --------------- */
.ai-section { padding: 64px 0; border-bottom: 1px solid var(--line); }
.ai-section-head { max-width: 880px; margin-bottom: 36px; }
.ai-section-eyebrow {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.12em;
  color: var(--orange); text-transform: uppercase;
}
.ai-section-h {
  font-family: var(--f-serif); font-weight: 400;
  font-size: clamp(34px, 4.4vw, 56px); line-height: 1.04; letter-spacing: -0.02em;
  color: var(--ink); margin-top: 14px;
}
.ai-section-h em { font-style: italic; color: var(--orange); }
.ai-section-sub { font-size: 16px; line-height: 1.55; color: var(--ink-mute); margin-top: 18px; max-width: 720px; }

/* --------------- Vertical vs horizontal --------------- */
.ai-split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.ai-split-card {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 28px 28px 24px;
  display: flex; flex-direction: column; gap: 16px;
}
.ai-split-bad { border-color: rgba(240,179,65,0.2); background: linear-gradient(180deg, rgba(240,179,65,0.04), transparent 50%); }
.ai-split-good { border-color: var(--orange-edge); background: linear-gradient(180deg, rgba(237,90,42,0.06), transparent 60%); }
.ai-split-tag {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; align-self: flex-start;
  padding: 4px 10px; border-radius: 4px;
}
.ai-split-bad .ai-split-tag { color: var(--amber); background: var(--amber-soft); }
.ai-split-good .ai-split-tag { color: var(--orange); background: var(--orange-soft); }
.ai-split-card h3 {
  font-family: var(--f-serif); font-weight: 400;
  font-size: clamp(22px, 2.4vw, 30px); line-height: 1.15;
  color: var(--ink);
}
.ai-split-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.ai-split-list li {
  display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: flex-start;
  font-size: 14px; line-height: 1.55; color: var(--ink-mute);
}
.ai-split-list .x { color: var(--amber); font-weight: 600; }
.ai-split-list .check { color: var(--green); font-weight: 600; }

/* --------------- Integration pictorial --------------- */
.ai-integration .ai-section-h em { color: var(--orange); font-style: italic; }
.integration-diagram {
  display: flex; flex-direction: column;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 28px 28px 24px;
  gap: 0;
  position: relative;
}
.int-row { display: flex; flex-direction: column; gap: 10px; }
.int-out-tag, .int-sor-tag {
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.12em;
  color: var(--ink-mute); text-transform: uppercase;
}
.int-out-list, .int-sor-list {
  display: grid; gap: 8px;
}
.int-out-list { grid-template-columns: repeat(4, minmax(0,1fr)); }
.int-sor-list  { grid-template-columns: repeat(6, minmax(0,1fr)); }
.int-out-list > span {
  background: rgba(95,194,111,0.10); color: var(--ink);
  border: 1px solid rgba(95,194,111,0.25);
  font-size: 13px; padding: 12px 14px; border-radius: var(--r-sm);
  text-align: center;
}
.int-sor-tile {
  background: rgba(255,255,255,0.03); color: var(--ink-mute);
  border: 1px solid var(--line);
  font-family: var(--f-mono); font-size: 11.5px;
  padding: 12px 12px; border-radius: var(--r-sm); text-align: center;
}

/* Connectors (vertical dashed lines between layers) */
.int-connectors {
  display: grid; grid-template-columns: repeat(6, minmax(0,1fr));
  height: 36px; padding: 0 4px;
}
.int-connectors > span {
  width: 1px; margin: 0 auto;
  background: repeating-linear-gradient(
    to bottom, var(--line-2) 0 6px, transparent 6px 10px
  );
  position: relative;
}
.int-connectors > span::before, .int-connectors > span::after {
  content: ''; position: absolute; left: 50%; transform: translateX(-50%);
  width: 6px; height: 6px; border-radius: 50%; background: var(--orange);
}
.int-connectors > span::before { top: -3px; }
.int-connectors > span::after  { bottom: -3px; }

/* Shipsy layer band */
.int-shipsy {
  margin: 18px 0;
  background: linear-gradient(180deg, rgba(237,90,42,0.12), rgba(237,90,42,0.04));
  border: 1px solid var(--orange-edge);
  border-radius: var(--r);
  padding: 20px 22px;
  text-align: center;
}
.int-shipsy-label {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--orange); text-transform: uppercase;
}
.int-shipsy-agents {
  display: flex; justify-content: center; gap: 10px; margin-top: 14px; flex-wrap: wrap;
}
.int-agent {
  font-family: var(--f-serif); font-size: 18px;
  color: #fff; padding: 8px 18px; border-radius: 999px;
  background: var(--bg-2);
}
.int-agent.a-atlas { background: linear-gradient(135deg, #ed5a2a, #b13a14); }
.int-agent.a-clara { background: linear-gradient(135deg, #5fc26f, #2b7a3a); }
.int-agent.a-nexa  { background: linear-gradient(135deg, #6db8ff, #2c6ec7); }
.int-agent.a-vera  { background: linear-gradient(135deg, #f0b341, #b87f1f); }
.int-agent.a-astra { background: linear-gradient(135deg, #c89dff, #7a4fc7); }
.int-shipsy-bottom {
  margin-top: 14px;
  font-family: var(--f-mono); font-size: 11.5px; letter-spacing: 0.06em;
  color: var(--ink-mute);
}

.ai-integration-note {
  margin-top: 18px; padding: 14px 18px;
  border-left: 3px solid var(--orange); border-radius: 0 var(--r) var(--r) 0;
  background: rgba(237,90,42,0.04);
  font-size: 14px; line-height: 1.55; color: var(--ink-mute);
}

@media (max-width: 1100px) {
  .int-out-list  { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .int-sor-list  { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .int-connectors { grid-template-columns: repeat(3, minmax(0,1fr)); }
}
@media (max-width: 640px) {
  .int-out-list, .int-sor-list { grid-template-columns: 1fr 1fr; }
  .int-connectors { grid-template-columns: repeat(2, minmax(0,1fr)); height: 24px; }
  .int-agent { font-size: 14px; padding: 6px 12px; }
}

/* --------------- Stack layers --------------- */
.ai-stack { display: flex; flex-direction: column; gap: 10px; }
.ai-stack-layer {
  display: grid; grid-template-columns: 200px 1fr; gap: 24px;
  padding: 22px 24px;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r);
  transition: border-color .25s ease, transform .25s ease;
}
.ai-stack-layer:hover { transform: translateY(-2px); border-color: var(--line-2); }
.ai-stack-layer.agent     { border-left: 3px solid var(--orange); }
.ai-stack-layer.reason    { border-left: 3px solid #c89dff; }
.ai-stack-layer.ontology  { border-left: 3px solid var(--blue); }
.ai-stack-layer.connector { border-left: 3px solid var(--green); }
.ai-stack-layer.sor       { border-left: 3px solid var(--ink-dim); opacity: 0.92; }
.ai-stack-head { display: flex; flex-direction: column; gap: 6px; padding-top: 4px; }
.ai-stack-no  {
  font-family: var(--f-serif); font-size: 36px; line-height: 1; color: var(--orange);
}
.ai-stack-layer.reason   .ai-stack-no { color: #c89dff; }
.ai-stack-layer.ontology .ai-stack-no { color: var(--blue); }
.ai-stack-layer.connector .ai-stack-no { color: var(--green); }
.ai-stack-layer.sor      .ai-stack-no { color: var(--ink); font-size: 22px; }
.ai-stack-tag {
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.1em;
  color: var(--ink-mute); text-transform: uppercase;
}
.ai-stack-body h3 {
  font-family: var(--f-serif); font-weight: 400;
  font-size: 22px; line-height: 1.18; color: var(--ink);
}
.ai-stack-body p { font-size: 14px; line-height: 1.55; color: var(--ink-mute); margin-top: 8px; max-width: 800px; }
.ai-stack-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.ai-stack-chips span {
  font-family: var(--f-mono); font-size: 11px;
  padding: 4px 10px; border-radius: 4px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.025);
  color: var(--ink);
}

/* --------------- Three paths --------------- */
.ai-paths { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.ai-path {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r);
  padding: 24px 24px 22px;
  display: flex; flex-direction: column; gap: 12px;
}
.ai-path.featured {
  border-color: var(--orange-edge);
  background: linear-gradient(180deg, rgba(237,90,42,0.06), transparent 70%);
}
.ai-path-tag {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--orange); text-transform: uppercase; align-self: flex-start;
  padding: 4px 10px; background: var(--orange-soft); border-radius: 4px;
}
.ai-path h3 {
  font-family: var(--f-serif); font-weight: 400;
  font-size: 22px; line-height: 1.18; color: var(--ink);
}
.ai-path-sub { font-family: var(--f-mono); font-size: 11px; color: var(--ink-mute); display: block; margin-top: 4px; }
.ai-path p { font-size: 13.5px; line-height: 1.55; color: var(--ink-mute); }
.ai-path ul { list-style: none; display: flex; flex-direction: column; gap: 6px; margin-top: auto; padding-top: 12px; border-top: 1px solid var(--line); }
.ai-path li { font-size: 12.5px; color: var(--ink); padding-left: 14px; position: relative; }
.ai-path li::before { content: '·'; position: absolute; left: 0; color: var(--orange); font-weight: 600; }

/* --------------- Moats --------------- */
.ai-moats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px;
}
.ai-moat {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r);
  padding: 22px 22px 18px;
  display: flex; flex-direction: column; gap: 10px;
}
.ai-moat-no {
  font-family: var(--f-serif); font-size: 28px; color: var(--orange);
  line-height: 1;
}
.ai-moat h3 {
  font-family: var(--f-serif); font-weight: 400;
  font-size: 20px; line-height: 1.18; color: var(--ink);
}
.ai-moat p { font-size: 13px; line-height: 1.55; color: var(--ink-mute); }
.ai-moat-proof {
  margin-top: auto; padding-top: 10px;
  font-family: var(--f-mono); font-size: 11px; color: var(--green);
  border-top: 1px solid var(--line);
}

/* --------------- Safety --------------- */
.ai-safety {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px;
}
.ai-safety-tier {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r);
  padding: 22px 22px 20px;
  display: flex; flex-direction: column; gap: 12px;
}
.ai-safety-no {
  font-family: var(--f-mono); font-size: 11px; color: var(--green);
  letter-spacing: 0.1em; text-transform: uppercase;
}
.ai-safety-tier h3 {
  font-family: var(--f-serif); font-weight: 400;
  font-size: 22px; color: var(--ink);
}
.ai-safety-tier ul { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.ai-safety-tier li {
  font-size: 13px; line-height: 1.5; color: var(--ink-mute);
  padding-left: 18px; position: relative;
}
.ai-safety-tier li::before { content: '✓'; position: absolute; left: 0; color: var(--green); }

.ai-safety-fine {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px;
  margin-top: 18px;
}
.ai-safety-fine > div {
  background: rgba(255,255,255,0.02); border: 1px solid var(--line); border-radius: var(--r-sm);
  padding: 14px 16px;
}
.ai-safety-fine span {
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.1em;
  color: var(--ink-mute); text-transform: uppercase;
}
.ai-safety-fine p { font-size: 12.5px; line-height: 1.55; color: var(--ink); margin-top: 6px; }

/* --------------- Closing --------------- */
.ai-closing {
  padding: 80px 0 40px;
  text-align: center;
}
.ai-closing h2 {
  font-family: var(--f-serif); font-weight: 400;
  font-size: clamp(38px, 5vw, 60px); line-height: 1.04; letter-spacing: -0.02em;
  color: var(--ink);
}
.ai-closing p {
  font-size: 16px; color: var(--ink-mute); margin-top: 18px;
  max-width: 720px; margin-left: auto; margin-right: auto;
}
.ai-closing-actions {
  display: inline-flex; gap: 14px; margin-top: 32px;
  align-items: center;
}
.ai-cta-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--orange); color: #fff; padding: 14px 24px;
  border-radius: 999px; font-size: 14.5px; font-weight: 600;
}
.ai-cta-primary:hover { background: #ff6633; }
.ai-cta-secondary {
  font-family: var(--f-mono); font-size: 13px; color: var(--ink-mute);
}
.ai-cta-secondary:hover { color: var(--ink); }

.ai-footer {
  margin-top: 32px; padding: 24px 0 0;
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--f-mono); font-size: 11px; color: var(--ink-dim);
  border-top: 1px solid var(--line);
}
.ai-footer a:hover { color: var(--ink); }

/* --------------- Responsive --------------- */
@media (max-width: 1100px) {
  .ai-topbar { grid-template-columns: auto auto auto; padding: 12px 18px; }
  .ai-nav { display: none; }
  .ai-main { padding: 0 20px 48px; }
  .ai-hero { padding: 56px 0 40px; }
  .ai-hero-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ai-split { grid-template-columns: 1fr; }
  .ai-stack-layer { grid-template-columns: 1fr; gap: 12px; padding: 18px 20px; }
  .ai-paths { grid-template-columns: 1fr; }
  .ai-moats { grid-template-columns: 1fr 1fr; }
  .ai-safety { grid-template-columns: 1fr; }
  .ai-safety-fine { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .ai-eyebrow { display: none; }
  .ai-moats { grid-template-columns: 1fr; }
  .ai-safety-fine { grid-template-columns: 1fr; }
  .ai-hero-h { font-size: clamp(36px, 9vw, 52px); }
  .ai-closing-actions { flex-direction: column; }
}