/* ============================================================
   Platform page — unique to platform.html
   Builds on design.css
   ============================================================ */

/* ---- Page hero ---- */
.p-hero {
  padding: clamp(64px, 8vw, 110px) 0 clamp(48px, 6vw, 80px);
  border-bottom: 1px solid var(--rule);
}
.p-hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: end;
}
@media (max-width: 900px) { .p-hero-grid { grid-template-columns: 1fr; } }
.p-hero h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(48px, 7.5vw, 124px);
  line-height: 0.95;
  letter-spacing: -0.03em;
}
.p-hero h1 em { font-style: italic; color: var(--signal); }

/* ---- Inside the flow (5 stages) ---- */
.flow-stages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  align-items: stretch;
}
.flow-stages.flow-stages--5 {
  grid-template-columns: repeat(5, 1fr);
  gap: clamp(20px, 2.4vw, 40px);
}
@media (max-width: 1100px) { .flow-stages.flow-stages--5 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 980px) { .flow-stages { grid-template-columns: 1fr 1fr; } }
@media (max-width: 760px) { .flow-stages.flow-stages--5 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .flow-stages, .flow-stages.flow-stages--5 { grid-template-columns: 1fr; } }
.fstage {
  border-top: 1px solid var(--ink);
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
}
.fstage-num {
  font-family: var(--display);
  font-style: italic;
  font-size: 32px;
  color: var(--signal);
  line-height: 1;
}
.fstage h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 36px;
  line-height: 1;
  letter-spacing: -0.02em;
}
.fstage p { font-size: 14px; line-height: 1.55; color: var(--ink-2); }
.fstage ul {
  list-style: none;
  border-top: 1px solid var(--rule);
  padding-top: 14px;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.fstage ul li {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  text-transform: uppercase;
}

/* ---- Knowledge wheel (slide 9) ---- */
.kwheel-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}
@media (max-width: 900px) { .kwheel-grid { grid-template-columns: 1fr; } }
.kwheel-svg { width: 100%; height: auto; max-width: 760px; margin: 0 auto; display: block; }

/* ---- Tech stack 4-layer ---- */
.stack-band {
  background: var(--deep);
  color: var(--bone);
  padding: clamp(80px, 10vw, 140px) 0;
  position: relative;
  overflow: hidden;
}
.stack-band::before {
  content: ""; position: absolute; inset: 0;
  background: url("assets/img/data-viz-1.svg") center/cover no-repeat;
  opacity: 0.18;
  filter: contrast(1.1) saturate(0.6);
}
.stack-band > * { position: relative; }
.stack-band .eyebrow { color: rgba(239,234,224,0.6); }
.stack-band .eyebrow .num { color: var(--bone); }
.stack-band h2 { color: var(--bone); }
.stack-band h2 em { color: var(--signal); }
.stack-band p { color: rgba(239,234,224,0.78); }
.stack-band .s-head { border-color: rgba(239,234,224,0.18); }

.stack-layers {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid rgba(239,234,224,0.18);
}
.stack-layer {
  display: grid;
  grid-template-columns: 100px 1fr 1.2fr 280px;
  gap: 32px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid rgba(239,234,224,0.18);
  transition: background .25s ease;
}
.stack-layer:hover { background: rgba(217, 52, 26, 0.06); }
.stack-layer .lnum {
  font-family: var(--display);
  font-style: italic;
  font-size: 36px;
  color: var(--signal);
}
.stack-layer h4 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(24px, 2.4vw, 36px);
  letter-spacing: -0.015em;
  line-height: 1.05;
  color: var(--bone);
}
.stack-layer p {
  font-size: 14px; line-height: 1.55;
  color: rgba(239,234,224,0.72);
  max-width: 50ch;
}
.stack-layer .lparts {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.stack-layer .lparts span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 8px;
  border: 1px solid rgba(239,234,224,0.28);
  color: rgba(239,234,224,0.86);
}
@media (max-width: 980px) {
  .stack-layer { grid-template-columns: 60px 1fr; gap: 16px; }
  .stack-layer p, .stack-layer .lparts { grid-column: 2; }
}
@media (max-width: 640px) {
  .stack-layer { grid-template-columns: 1fr; gap: 12px; padding: 22px 0; }
  .stack-layer .lnum { font-size: 28px; }
  .stack-layer p, .stack-layer .lparts { grid-column: 1; }
}

/* ---- Product UI mocks ---- */
.prod-band {
  padding: clamp(80px, 10vw, 140px) 0;
}
.prod-mocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  margin-top: 48px;
}
@media (max-width: 1100px) { .prod-mocks { grid-template-columns: 1fr; } }

.mock-frame {
  background: var(--deep);
  border: 1px solid var(--ink);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.mock-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--deep-2);
  border-bottom: 1px solid rgba(239,234,224,0.1);
}
.mock-chrome .dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(239,234,224,0.18); }
.mock-chrome .dot.r { background: #d9341a; }
.mock-chrome .url {
  font-family: var(--mono);
  font-size: 11px;
  color: rgba(239,234,224,0.55);
  margin-left: 8px;
}
.mock-body {
  color: var(--bone);
  font-family: var(--sans);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.mock-cap {
  padding: 14px 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-2);
  text-transform: uppercase;
  border-top: 1px solid var(--rule);
  background: var(--bone-2);
}

/* NPV mock specifics */
.npv-head {
  display: flex; justify-content: space-between; align-items: baseline;
  border-bottom: 1px solid rgba(239,234,224,0.12);
  padding-bottom: 12px;
}
.npv-head h5 { font-family: var(--display); font-style: italic; font-size: 22px; color: var(--bone); font-weight: 400; }
.npv-head .tag {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  color: var(--signal); border: 1px solid var(--signal); background: transparent;
  padding: 3px 7px;
}
.npv-stats { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
@media (max-width: 640px) { .npv-stats { grid-template-columns: 1fr 1fr; } }
.npv-stats .s {
  border-left: 1px solid rgba(239,234,224,0.18);
  padding-left: 10px;
}
.npv-stats .s .k {
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(239,234,224,0.5);
}
.npv-stats .s .v {
  font-family: var(--display); font-size: 28px; line-height: 1; color: var(--bone); margin-top: 4px;
}
.npv-stats .s .v.signal { color: var(--signal); font-style: italic; }

.npv-chart-wrap { background: rgba(239,234,224,0.04); padding: 14px; }
.npv-chart-wrap .chart-head {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
  text-transform: uppercase; color: rgba(239,234,224,0.55);
  margin-bottom: 8px;
}
.npv-chart { width: 100%; height: 140px; }

.scen-table { width: 100%; min-width: 380px; border-collapse: collapse; font-size: 12px; }
.scen-table th, .scen-table td {
  text-align: left; padding: 8px 10px;
  border-bottom: 1px solid rgba(239,234,224,0.1);
}
.scen-table th {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
  color: rgba(239,234,224,0.5); text-transform: uppercase; font-weight: 500;
}
.scen-table td { color: rgba(239,234,224,0.85); font-family: var(--sans); }
.scen-table td.num { font-family: var(--mono); font-feature-settings: "tnum"; }
.scen-table .rec { color: var(--signal); }
.scen-table .pill {
  display: inline-block; padding: 2px 6px; font-family: var(--mono); font-size: 9px;
  letter-spacing: 0.08em; text-transform: uppercase;
  border: 1px solid rgba(239,234,224,0.28); border-radius: 0; color: rgba(239,234,224,0.8);
}
.scen-table .pill.go    { color: var(--signal); border-color: var(--signal); }
.scen-table .pill.hold  { color: rgba(239,234,224,0.5); }

/* Portfolio mock specifics */
.port-head {
  display: flex; justify-content: space-between; align-items: baseline;
  border-bottom: 1px solid rgba(239,234,224,0.12);
  padding-bottom: 12px;
}
.port-head h5 { font-family: var(--display); font-style: italic; font-size: 22px; color: var(--bone); font-weight: 400; }
.port-tabs { display: flex; gap: 14px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; }
.port-tabs span { color: rgba(239,234,224,0.45); padding-bottom: 4px; }
.port-tabs span.on { color: var(--bone); border-bottom: 1px solid var(--signal); }

.bubble-chart { width: 100%; height: 240px; background: rgba(239,234,224,0.03); position: relative; }
.bubble-legend { display: flex; gap: 16px; font-family: var(--mono); font-size: 10px; color: rgba(239,234,224,0.55); }
.bubble-legend .sw { width: 8px; height: 8px; display: inline-block; margin-right: 6px; vertical-align: middle; }

.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 640px) { .kpi-row { grid-template-columns: 1fr 1fr; } }
.kpi { border: 1px solid rgba(239,234,224,0.14); padding: 10px 12px; }
.kpi .k { font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(239,234,224,0.5); }
.kpi .v { font-family: var(--display); font-size: 20px; color: var(--bone); margin-top: 4px; line-height: 1; }
.kpi .d { font-family: var(--mono); font-size: 10px; color: var(--signal); margin-top: 2px; }
.kpi .d.dn { color: rgba(239,234,224,0.5); }