/* ============================================================
   Toyota Technology — "Beyond Zero"
   ------------------------------------------------------------
   Creative dark tech page. Interactive powertrain explorer
   with animated energy-flow schematics. Reuses design tokens.
   ============================================================ */

.tech-page { background: #0A0A12; }
.tech-page main { background: #0A0A12; color: #fff; }

/* === Hero ================================================ */
.c-tech-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.c-tech-hero__slot {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
}

.c-tech-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 600px at 75% 15%, rgba(5,134,189,0.28), transparent 60%),
    radial-gradient(900px 500px at 15% 85%, rgba(31,138,91,0.22), transparent 60%),
    linear-gradient(180deg, rgba(10,10,18,0.72) 0%, rgba(10,10,18,0.6) 40%, rgba(10,10,18,0.95) 100%);
}

.c-tech-hero__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  padding: 0 var(--gutter-desktop);
}

@media (max-width: 1024px) { .c-tech-hero__inner { padding: 0 var(--gutter-mobile); } }

.c-tech-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin: 0 0 var(--s-5);
}
.c-tech-hero__eyebrow::before { content:""; width:28px; height:2px; background: #0FB5D6; }

.c-tech-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(56px, 11vw, 160px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  margin: 0;
}

.c-tech-hero__title .zero {
  background: linear-gradient(120deg, #0FB5D6 0%, #2BE6A0 60%, #7CF29A 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.c-tech-hero__lede {
  margin: var(--s-8) 0 0;
  font-size: clamp(var(--fs-base), 1.5vw, var(--fs-lg));
  line-height: 1.6;
  color: rgba(255,255,255,0.82);
  max-width: 60ch;
}

.c-tech-hero__scroll {
  position: absolute;
  bottom: var(--s-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-2);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}
.c-tech-hero__scroll span { width:1px; height:32px; background: linear-gradient(180deg, rgba(255,255,255,0.5), transparent); animation: techScroll 1.8s var(--ease-inout) infinite; }
@keyframes techScroll { 0%{transform:scaleY(0);transform-origin:top;} 50%{transform:scaleY(1);transform-origin:top;} 50.1%{transform-origin:bottom;} 100%{transform:scaleY(0);transform-origin:bottom;} }

/* === Section shell ====================================== */
.c-tech-section {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--s-24) var(--gutter-desktop);
}
@media (max-width: 1024px) { .c-tech-section { padding: var(--s-16) var(--gutter-mobile); } }

.c-tech-eyebrow {
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: var(--ls-wider);
  text-transform: uppercase; color: #2BE6A0; margin: 0 0 var(--s-4);
}
.c-tech-eyebrow::before { content:""; width:24px; height:2px; background: #2BE6A0; }

.c-tech-h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0;
  color: #fff;
  text-wrap: balance;
}

.c-tech-lede {
  margin: var(--s-5) 0 0;
  font-size: var(--fs-md);
  line-height: 1.6;
  color: rgba(255,255,255,0.66);
  max-width: 60ch;
}

/* === Powertrain explorer ================================ */
.c-pt {
  margin-top: var(--s-12);
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--s-8);
  align-items: stretch;
}

@media (max-width: 900px) { .c-pt { grid-template-columns: 1fr; gap: var(--s-5); } }

/* Selector rail */
.c-pt__rail {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}

@media (max-width: 900px) {
  .c-pt__rail { flex-direction: row; overflow-x: auto; scrollbar-width: none; padding-bottom: var(--s-2); }
  .c-pt__rail::-webkit-scrollbar { display: none; }
}

.c-pt__tab {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--s-4);
  padding: var(--s-5);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  color: #fff;
  transition: background var(--t-fast) var(--ease-out),
              border-color var(--t-fast) var(--ease-out),
              transform var(--t-fast) var(--ease-out);
  overflow: hidden;
}

.c-pt__tab:hover { background: rgba(255,255,255,0.07); }

.c-pt__tab.is-active {
  background: rgba(255,255,255,0.08);
  border-color: var(--pt-accent, #0FB5D6);
}

.c-pt__tab.is-active::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--pt-accent, #0FB5D6);
}

@media (max-width: 900px) {
  .c-pt__tab { flex: 0 0 auto; min-width: 200px; }
}

.c-pt__tab-badge {
  width: 44px; height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--pt-accent, #0FB5D6) 18%, transparent);
  color: var(--pt-accent, #0FB5D6);
}
.c-pt__tab-badge svg { width: 24px; height: 24px; }

.c-pt__tab-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.c-pt__tab-abbr {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--ls-wide);
  color: var(--pt-accent, #0FB5D6);
  font-weight: 700;
}
.c-pt__tab-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-base);
  color: #fff;
  line-height: 1.25;
}

/* Detail panel */
.c-pt__panel {
  position: relative;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(700px 400px at 80% 0%, color-mix(in srgb, var(--pt-accent, #0FB5D6) 16%, transparent), transparent 70%),
    rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.10);
  padding: var(--s-10);
  overflow: hidden;
  min-height: 460px;
}

@media (max-width: 720px) { .c-pt__panel { padding: var(--s-6); } }

.c-pt__panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  flex-wrap: wrap;
}

.c-pt__panel-abbr {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: var(--ls-wide);
  color: var(--pt-accent, #0FB5D6);
  font-weight: 700;
}

.c-pt__panel-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #fff;
  margin: var(--s-2) 0 0;
}

/* Energy-flow schematic */
.c-pt__schematic {
  margin: var(--s-8) 0;
  width: 100%;
  height: 130px;
}

.c-pt__flow {
  stroke: var(--pt-accent, #0FB5D6);
  stroke-width: 2.5;
  stroke-dasharray: 7 9;
  fill: none;
  opacity: 0.9;
  animation: ptFlow 1s linear infinite;
}
@keyframes ptFlow { to { stroke-dashoffset: -16; } }

.c-pt__node-box {
  fill: rgba(255,255,255,0.06);
  stroke: rgba(255,255,255,0.18);
  stroke-width: 1.5;
}
.c-pt__node-ic { fill: none; stroke: #fff; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.c-pt__node-label { fill: rgba(255,255,255,0.7); font-family: var(--font-body); font-size: 11px; font-weight: 600; text-anchor: middle; }

.c-pt__desc {
  font-size: var(--fs-base);
  line-height: 1.65;
  color: rgba(255,255,255,0.78);
  margin: 0 0 var(--s-6);
  max-width: 64ch;
}

.c-pt__traits {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}

.c-pt__trait {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 var(--s-4);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--pt-accent, #0FB5D6) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--pt-accent, #0FB5D6) 36%, transparent);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: #fff;
}

.c-pt__trait svg { width: 14px; height: 14px; color: var(--pt-accent, #0FB5D6); }

/* Fade/slide panel content on switch */
.c-pt__fade { animation: ptFade 0.45s var(--ease-out); }
@keyframes ptFade { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* === Hydrogen / zero-emission callout =================== */
.c-tech-callout {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter-desktop) var(--s-24);
}
@media (max-width: 1024px) { .c-tech-callout { padding: 0 var(--gutter-mobile) var(--s-16); } }

.c-tech-callout__inner {
  position: relative;
  border-radius: var(--radius-2xl);
  padding: var(--s-16) var(--s-12);
  overflow: hidden;
  background:
    radial-gradient(600px 400px at 85% 50%, rgba(15,181,214,0.30), transparent 70%),
    linear-gradient(120deg, #0E2A33 0%, #0A0A12 70%);
  border: 1px solid rgba(255,255,255,0.10);
}

@media (max-width: 720px) { .c-tech-callout__inner { padding: var(--s-10) var(--s-6); } }

.c-tech-callout__eyebrow {
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: var(--ls-wider);
  text-transform: uppercase; color: #0FB5D6; margin: 0 0 var(--s-3);
}

.c-tech-callout__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 3.5vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 0;
  max-width: 18ch;
}

.c-tech-callout__title em {
  font-style: normal;
  background: linear-gradient(120deg, #0FB5D6, #2BE6A0);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}

.c-tech-callout__body {
  margin: var(--s-5) 0 0;
  font-size: var(--fs-md);
  line-height: 1.6;
  color: rgba(255,255,255,0.74);
  max-width: 52ch;
}

.c-tech-callout__drop {
  position: absolute;
  right: var(--s-12);
  top: 50%;
  transform: translateY(-50%);
  width: 120px; height: 120px;
  color: #0FB5D6;
  opacity: 0.9;
}
@media (max-width: 900px) { .c-tech-callout__drop { display: none; } }

/* === CTA ================================================ */
.c-tech-cta {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter-desktop) var(--s-24);
  text-align: center;
}
@media (max-width: 1024px) { .c-tech-cta { padding: 0 var(--gutter-mobile) var(--s-16); } }

.c-tech-cta__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 48px);
  letter-spacing: -0.02em;
  color: #fff;
  margin: 0 0 var(--s-6);
  text-wrap: balance;
}

.c-tech-cta__actions { display: inline-flex; gap: var(--s-3); flex-wrap: wrap; justify-content: center; }

.c-tech-cta .c-btn--secondary { background:#fff; color:#0A0A12; border-color:#fff; }
.c-tech-cta .c-btn--outline { border-color: rgba(255,255,255,0.5); color:#fff; }
.c-tech-cta .c-btn--outline:hover { background: rgba(255,255,255,0.1); border-color:#fff; }

/* Reveal */
@media (prefers-reduced-motion: no-preference) {
  .tech-reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out); }
  .tech-reveal.is-in { opacity: 1; transform: none; }
}

/* Navbar stays readable on the very dark hero — force inverted look */
.tech-page .c-navbar:not(.is-scrolled) { background: transparent; }