/* masterpiece-1 — Apple / Tesla / SpaceX Home. Not metricool. */
:root {
  --mp-display: clamp(3.5rem, 8vw, 6rem);
  --mp-display-sm: clamp(2.4rem, 5vw, 3.6rem);
  --mp-body: 1.05rem;
  --mp-whisper: 0.9rem;
  --mp-track-display: -0.045em;
  --mp-track-sm: -0.035em;
  --mp-weight-display: 560;
  --mp-pad-chapter: clamp(5rem, 12vh, 10rem);
  --mp-gutter: clamp(1.25rem, 4vw, 2.5rem);
  --mp-max: 1200px;
  --mp-void: #0B1F3A;
  --mp-void-deep: #070B12;
  --mp-ink: #FFFFFF;
  --mp-muted: rgba(255, 255, 255, 0.55);
  --mp-amber: #E8A23A;
  --mp-amber-hover: #D4922F;
  --mp-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--mp-void);
}

body.mp {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--mp-void);
  color: var(--mp-ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: none; }
img { display: block; max-width: 100%; }

/* —— Nav: transparent over void, mark-on-dark —— */
.mp-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem var(--mp-gutter);
  background: transparent;
  backdrop-filter: none;
}

.mp-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(11, 31, 58, 0.85), rgba(11, 31, 58, 0));
  pointer-events: none;
  z-index: -1;
}

.mp-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 560;
  font-size: 0.95rem;
  letter-spacing: -0.03em;
  color: var(--mp-ink);
  z-index: 1;
}

.mp-mark img { border-radius: 0; flex-shrink: 0; }

.mp-nav nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 1;
}

.mp-nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.mp-nav-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 200ms var(--mp-ease);
}

.mp-nav-links a:hover { color: var(--mp-ink); }

.mp-nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--mp-ink);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}

/* —— Buttons —— */
.mp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.15rem;
  border-radius: 999px;
  background: var(--mp-amber);
  color: #0B1F3A;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: -0.01em;
  border: none;
  transition: background 200ms var(--mp-ease), transform 200ms var(--mp-ease);
}

.mp-btn:hover {
  background: var(--mp-amber-hover);
  transform: translateY(-1px);
}

.mp-btn-lg {
  padding: 0.85rem 1.55rem;
  font-size: 1.02rem;
}

.mp-text-link {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
  padding-bottom: 1px;
  transition: color 200ms var(--mp-ease), border-color 200ms var(--mp-ease);
}

.mp-text-link:hover {
  color: var(--mp-ink);
  border-color: rgba(255, 255, 255, 0.6);
}

/* —— Reveal motion: slow, once —— */
.js .mp-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 800ms var(--mp-ease), transform 800ms var(--mp-ease);
}

.js .mp-reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .js .mp-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* —— Ch.1 Hero —— */
.mp-hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2.5rem var(--mp-gutter) 4rem;
  text-align: center;
  background: var(--mp-void);
}

.mp-hero-copy {
  max-width: 18ch;
  margin: 0 auto 2.5rem;
}

.mp-hero h1 {
  margin: 0 0 1.75rem;
  font-size: var(--mp-display);
  font-weight: var(--mp-weight-display);
  letter-spacing: var(--mp-track-display);
  line-height: 1.05;
  color: var(--mp-ink);
}

.mp-whisper {
  margin: 1rem 0 0;
  font-size: var(--mp-whisper);
  color: var(--mp-muted);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.mp-proof {
  margin: 2rem 0 0;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.02em;
}

/* Compose object pedestal */
.mp-object-wrap {
  position: relative;
  width: min(100%, 1100px);
  margin: 0 auto;
}

.mp-glow {
  position: absolute;
  inset: 10% 5% -5%;
  background: radial-gradient(ellipse at 50% 80%, rgba(232, 162, 58, 0.22), transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.mp-object {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 148px 1fr 160px;
  min-height: min(70vh, 640px);
  background: #f7f8fc;
  border-radius: 16px;
  overflow: hidden;
  box-shadow:
    0 50px 140px rgba(0, 0, 0, 0.55),
    0 0 80px rgba(232, 162, 58, 0.15);
  color: #0f172a;
  text-align: left;
}

.mp-obj-rail {
  background: #fff;
  border-right: 1px solid #e6ebf1;
  padding: 1.1rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.mp-obj-brand {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: -0.03em;
  margin-bottom: 0.9rem;
  color: #0B1F3A;
}

.mp-obj-rail > span {
  font-size: 0.78rem;
  color: #64748b;
  padding: 0.4rem 0.55rem;
  border-radius: 8px;
}

.mp-obj-rail > span.on {
  background: rgba(232, 162, 58, 0.12);
  color: var(--mp-amber);
  font-weight: 600;
}

.mp-obj-main {
  padding: 1.15rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.mp-obj-main h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: #0f172a;
}

.mp-obj-saved {
  margin: 0.25rem 0 0.85rem;
  font-size: 0.72rem;
  color: #94a3b8;
}

.mp-obj-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.mp-obj-chips span {
  font-size: 0.7rem;
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  color: #64748b;
  background: #fff;
}

.mp-obj-chips span.on {
  border-color: #f3d7a4;
  color: var(--mp-amber);
  background: #fff6e8;
  font-weight: 600;
}

.mp-obj-vars {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
  flex: 1;
}

.mp-obj-vars > div {
  padding: 0.55rem 0.7rem;
  border-radius: 10px;
  border: 1px solid #e6ebf1;
  background: #fff;
  display: grid;
  gap: 0.15rem;
}

.mp-obj-vars > div.on {
  border-color: rgba(232, 162, 58, 0.4);
  box-shadow: 0 0 0 1px rgba(232, 162, 58, 0.15);
}

.mp-obj-vars strong {
  font-size: 0.72rem;
  color: #0B1F3A;
}

.mp-obj-vars span {
  font-size: 0.78rem;
  color: #475569;
  line-height: 1.35;
}

.mp-obj-media {
  height: 72px;
  border-radius: 10px;
  background:
    linear-gradient(135deg, rgba(232, 162, 58, 0.25), rgba(11, 31, 58, 0.15)),
    #e8edf4;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  color: #64748b;
  margin-bottom: 0.75rem;
}

.mp-obj-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.72rem;
  color: #64748b;
}

.mp-obj-actions {
  display: flex;
  gap: 0.35rem;
}

.mp-obj-actions .sch {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  color: #0f172a;
  font-weight: 500;
}

.mp-obj-actions .pub {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--mp-amber);
  color: #0B1F3A;
  font-weight: 600;
}

.mp-obj-phone {
  background: #0B1F3A;
  padding: 1.25rem 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mp-phone {
  width: 100%;
  max-width: 128px;
  aspect-ratio: 9 / 16;
  background: #122846;
  border-radius: 18px;
  padding: 8px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.mp-phone-bar {
  width: 36px;
  height: 4px;
  border-radius: 999px;
  background: #334155;
  margin: 2px auto 8px;
}

.mp-phone-feed {
  background: #fff;
  border-radius: 10px;
  height: calc(100% - 14px);
  padding: 0.4rem;
}

.mp-phone-handle {
  font-size: 0.55rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 0.3rem;
}

.mp-phone-thumb {
  height: 42%;
  border-radius: 6px;
  background: linear-gradient(135deg, #E8A23A, #0B1F3A);
  margin-bottom: 0.35rem;
}

.mp-phone-feed p {
  margin: 0;
  font-size: 0.52rem;
  line-height: 1.35;
  color: #334155;
}

/* —— Ch.2 Cinema —— */
.mp-cinema {
  min-height: 90vh;
  background: var(--mp-void-deep);
  display: flex;
  align-items: stretch;
  padding: 0;
}

.mp-cinema-stage {
  position: relative;
  width: 100%;
  min-height: min(90vh, 900px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.mp-cinema-crop {
  position: absolute;
  inset: 8% var(--mp-gutter) 18%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mp-cinema-frame {
  width: min(100%, 1100px);
  height: 100%;
  background: linear-gradient(160deg, #122846 0%, #0B1F3A 50%, #070B12 100%);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.55);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.mp-cf-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

.mp-cf-dots {
  width: 42px;
  height: 10px;
  border-radius: 999px;
  background:
    radial-gradient(circle at 5px 5px, #ef4444 4px, transparent 5px),
    radial-gradient(circle at 21px 5px, #e8a23a 4px, transparent 5px),
    radial-gradient(circle at 37px 5px, #22c55e 4px, transparent 5px);
}

.mp-cf-body {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.04);
  min-height: 0;
}

.mp-cf-col {
  background: rgba(11, 31, 58, 0.6);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mp-cf-col em {
  font-style: normal;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mp-amber);
}

.mp-cf-col p {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.35;
  color: var(--mp-ink);
}

.mp-cinema-caption {
  position: relative;
  z-index: 2;
  margin: 0;
  padding: 0 var(--mp-gutter) 2.5rem;
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--mp-ink);
}

/* —— Ch.3 Idea —— */
.mp-idea {
  min-height: 70vh;
  background: var(--mp-void);
  display: flex;
  align-items: center;
  padding: var(--mp-pad-chapter) var(--mp-gutter);
}

.mp-idea-inner {
  max-width: var(--mp-max);
  margin: 0 auto;
  width: 100%;
}

.mp-idea h2 {
  margin: 0 0 1rem;
  font-size: var(--mp-display-sm);
  font-weight: var(--mp-weight-display);
  letter-spacing: var(--mp-track-sm);
  line-height: 1.1;
  color: var(--mp-ink);
}

.mp-idea-line {
  margin: 0 0 3.5rem;
  font-size: var(--mp-body);
  color: var(--mp-muted);
  max-width: 28ch;
}

.mp-caption-stack {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 640px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.mp-cap {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1.25rem;
  align-items: baseline;
  padding: 1.35rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--mp-ink);
}

.mp-cap-net {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--mp-amber);
}

/* —— Ch.4 Calm strip —— */
.mp-strip {
  min-height: 28vh;
  background: var(--mp-void-deep);
  display: flex;
  align-items: center;
  padding: 3.5rem var(--mp-gutter);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.mp-strip-inner {
  max-width: var(--mp-max);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.mp-strip-line {
  margin: 0;
  font-size: clamp(1.15rem, 2.5vw, 1.55rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--mp-ink);
}

.mp-strip-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* —— Ch.5 Close —— */
.mp-close {
  min-height: 60vh;
  background: var(--mp-void);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--mp-pad-chapter) var(--mp-gutter);
}

.mp-close-inner h2 {
  margin: 0 0 1.75rem;
  font-size: var(--mp-display-sm);
  font-weight: var(--mp-weight-display);
  letter-spacing: var(--mp-track-sm);
  color: var(--mp-ink);
}

/* —— Footer —— */
.mp-footer {
  padding: 2.5rem var(--mp-gutter) 3rem;
  background: var(--mp-void-deep);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.mp-footer .mp-mark {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.mp-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  flex: 1;
}

.mp-footer-links a {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.45);
  transition: color 200ms var(--mp-ease);
}

.mp-footer-links a:hover { color: rgba(255, 255, 255, 0.85); }

.mp-footer-credit {
  margin: 0;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.3);
  width: 100%;
}

/* —— Responsive —— */
@media (max-width: 900px) {
  .mp-object {
    grid-template-columns: 1fr;
    min-height: min(70vh, 560px);
  }

  .mp-obj-rail {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    border-right: none;
    border-bottom: 1px solid #e6ebf1;
    gap: 0.25rem;
  }

  .mp-obj-brand { margin-bottom: 0; margin-right: 0.5rem; }
  .mp-obj-phone { display: none; }

  .mp-cf-body { grid-template-columns: 1fr; }
  .mp-cf-col { padding: 1.25rem 1.35rem; }
  .mp-cinema-crop { inset: 6% var(--mp-gutter) 22%; }
}

@media (max-width: 640px) {
  .mp-nav-toggle { display: inline-flex; }

  .mp-nav-links {
    display: none;
    position: absolute;
    top: 100%;
    right: var(--mp-gutter);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(7, 11, 18, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0.5rem;
    min-width: 160px;
  }

  .mp-nav-links.open { display: flex; }
  .mp-nav-links a { padding: 0.65rem 0.85rem; }

  .mp-hero-copy { max-width: none; }
  .mp-strip-inner { flex-direction: column; align-items: flex-start; }
  .mp-caption-stack { max-width: none; }
}