/* ═══════════════════════════════════
   Derek Does Web — App Stylesheet
   © Appnow Cloud 2026
   ═══════════════════════════════════ */

/* ═══ FONTS ═══ */
@font-face {
  font-family: 'Instrument Serif';
  font-style: normal; font-weight: 400; font-display: swap;
  src: url(/fonts/instrument-serif-regular.woff2) format('woff2');
}
@font-face {
  font-family: 'Instrument Serif';
  font-style: italic; font-weight: 400; font-display: swap;
  src: url(/fonts/instrument-serif-italic.woff2) format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal; font-weight: 400 600; font-display: swap;
  src: url(/fonts/jetbrains-mono-latin.woff2) format('woff2');
}
@font-face {
  font-family: 'Syne';
  font-style: normal; font-weight: 400 800; font-display: swap;
  src: url(/fonts/syne-latin.woff2) format('woff2');
}

/* ═══ VARIABLES ═══ */
:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-raised: #1a1a1a;
  --border: #222222;
  --border-accent: #333333;
  --text: #e8e4de;
  --text-dim: #807a72;
  --text-muted: #8a8580;
  --accent: #f0c040;
  --accent-dim: #c49a20;
  --accent-glow: rgba(240, 192, 64, 0.08);
  --white: #ffffff;
}

/* ═══ BASE ═══ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  font-family: 'Syne', sans-serif; background: var(--bg);
  color: var(--text); overflow-x: hidden; -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent); color: var(--bg); }

/* ═══ NAV ═══ */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 1.25rem 3rem; display: flex; justify-content: space-between; align-items: center;
  background: rgba(10,10,10,0.85); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border); transition: all 0.3s ease;
}
.nav-logo {
  font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; font-weight: 600;
  letter-spacing: 0.08em; color: var(--accent); text-transform: uppercase;
  text-decoration: none;
}
.nav-links { display: flex; gap: 2.5rem; }
.nav-links a {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--text-dim); text-decoration: none; transition: color 0.3s ease;
}
.nav-links a:hover { color: var(--accent); }

/* Hamburger — hidden on desktop */
.nav-hamburger {
  display: none; background: none; border: none; cursor: pointer;
  padding: 0.5rem; width: 36px; height: 36px;
  position: relative; z-index: 10000;
}
.nav-hamburger span {
  display: block; width: 20px; height: 2px;
  background: var(--text); margin: 4px auto;
  transition: all 0.3s ease;
}
.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* ═══ HERO ═══ */
.hero {
  min-height: 100vh; display: flex; flex-direction: column;
  justify-content: center; padding: 8rem 3rem 4rem; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; right: -20%;
  width: 80vw; height: 80vw; border-radius: 50%;
  background: radial-gradient(circle, rgba(240,192,64,0.03) 0%, transparent 70%);
  pointer-events: none;
}
.hero-image {
  position: absolute; top: 0; right: 0; bottom: 0; width: 45%;
  overflow: hidden; z-index: 0; opacity: 0.15;
}
.hero-image img { width: 100%; height: 100%; object-fit: cover; }
.img-placeholder {
  width: 100%; height: 100%;
  background: linear-gradient(135deg, var(--surface) 0%, var(--border) 50%, var(--surface) 100%);
  display: flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace; font-size: 0.65rem; color: var(--text-muted);
  text-align: center; padding: 2rem; letter-spacing: 0.05em;
}
.hero > * { position: relative; z-index: 1; }

.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 2rem;
  opacity: 0; animation: fadeUp 0.8s ease 0.2s forwards;
}
.hero h1 {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: clamp(3rem, 8vw, 7rem); line-height: 0.95;
  letter-spacing: -0.03em; color: var(--white); max-width: 900px;
  opacity: 0; animation: fadeUp 0.8s ease 0.4s forwards;
}
.hero h1 em {
  font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; color: var(--accent);
}
.hero-sub {
  margin-top: 2.5rem; font-size: 1.15rem; line-height: 1.7;
  color: var(--text-dim); max-width: 560px;
  opacity: 0; animation: fadeUp 0.8s ease 0.6s forwards;
}

/* Countdown */
.countdown-strip {
  margin-top: 2.5rem; padding: 1.25rem 2rem;
  background: var(--surface); border: 1px solid var(--border);
  display: inline-flex; align-items: center; gap: 2rem;
  opacity: 0; animation: fadeUp 0.8s ease 0.7s forwards; max-width: fit-content;
}
.countdown-strip .cd-label {
  font-family: 'JetBrains Mono', monospace; font-size: 0.65rem;
  letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); line-height: 1.4;
}
.countdown-strip .cd-number {
  font-family: 'Instrument Serif', serif; font-size: 2.5rem;
  color: var(--accent); line-height: 1; min-width: 140px;
}
.countdown-strip .cd-number span {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  color: var(--text-muted); margin-left: 0.5rem;
}
.countdown-strip .cd-retire {
  font-family: 'JetBrains Mono', monospace; font-size: 0.65rem;
  color: var(--text-muted); letter-spacing: 0.05em;
  border-left: 1px solid var(--border); padding-left: 2rem;
}

.hero-cta-row {
  display: flex; gap: 1.5rem; align-items: center; margin-top: 2.5rem;
  opacity: 0; animation: fadeUp 0.8s ease 0.9s forwards;
}
.btn-primary {
  display: inline-block; font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 1.1rem 2.5rem; background: var(--accent); color: var(--bg);
  border: none; cursor: pointer; text-decoration: none; transition: all 0.3s ease;
}
.btn-primary:hover {
  background: var(--white); transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(240,192,64,0.2);
}
.btn-ghost {
  font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-dim); text-decoration: none;
  padding: 1rem 0; border-bottom: 1px solid var(--border-accent); transition: all 0.3s ease;
}
.btn-ghost:hover { color: var(--accent); border-color: var(--accent); }

.hero-stats {
  display: flex; gap: 4rem; margin-top: 4rem;
  padding-top: 3rem; border-top: 1px solid var(--border);
  opacity: 0; animation: fadeUp 0.8s ease 1s forwards;
}
.stat-num {
  font-family: 'Instrument Serif', serif; font-size: 3rem;
  font-weight: 400; color: var(--white); line-height: 1;
}
.stat-label {
  font-family: 'JetBrains Mono', monospace; font-size: 0.65rem;
  letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); margin-top: 0.5rem;
}

/* ═══ MANIFESTO ═══ */
.manifesto { padding: 8rem 3rem; border-top: 1px solid var(--border); }
.manifesto-grid {
  display: grid; grid-template-columns: 1fr 1.2fr;
  gap: 6rem; max-width: 1200px; margin: 0 auto;
}
.manifesto-label {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); margin-bottom: 2rem;
}
.manifesto h2 {
  font-family: 'Syne', sans-serif; font-weight: 700;
  font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.1;
  color: var(--white); letter-spacing: -0.02em;
}
.manifesto-text p {
  font-size: 1.05rem; line-height: 1.85; color: var(--text-dim); margin-bottom: 1.5rem;
}
.manifesto-text strong { color: var(--text); font-weight: 600; }
.section-image {
  width: 100%; aspect-ratio: 16/9; overflow: hidden;
  margin-top: 3rem; border: 1px solid var(--border);
}
.section-image img { width: 100%; height: 100%; object-fit: cover; }

/* ═══ MODEL ═══ */
.model {
  padding: 8rem 3rem; background: var(--surface);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.model-inner { max-width: 1200px; margin: 0 auto; }
.section-label {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); margin-bottom: 1.5rem;
}
.section-title {
  font-family: 'Syne', sans-serif; font-weight: 700;
  font-size: clamp(2rem, 4vw, 3rem); line-height: 1.1;
  color: var(--white); max-width: 700px; margin-bottom: 4rem;
}
.model-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.step {
  padding: 2.5rem; border: 1px solid var(--border);
  background: var(--bg); position: relative; transition: all 0.4s ease;
}
.step:hover { border-color: var(--accent-dim); background: var(--accent-glow); transform: translateY(-4px); }
.step-num {
  font-family: 'Instrument Serif', serif; font-size: 3.5rem;
  color: var(--border-accent); line-height: 1; margin-bottom: 1.5rem; transition: color 0.4s ease;
}
.step:hover .step-num { color: var(--accent-dim); }
.step h3 {
  font-family: 'Syne', sans-serif; font-weight: 700;
  font-size: 1.15rem; color: var(--white); margin-bottom: 1rem;
}
.step p { font-size: 0.92rem; line-height: 1.7; color: var(--text-dim); }

.model-platform { margin-top: 5rem; padding-top: 4rem; border-top: 1px solid var(--border); }
.model-platform h3 {
  font-family: 'Syne', sans-serif; font-weight: 700;
  font-size: 1.3rem; color: var(--white); margin-bottom: 2rem;
}
.model-platform-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.model-platform-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 2rem; text-decoration: none; transition: all 0.3s ease;
}
.model-platform-card:hover { border-color: var(--accent-dim); background: var(--accent-glow); transform: translateY(-4px); }
.mpc-name {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 1rem;
}
.model-platform-card p { font-size: 0.9rem; line-height: 1.7; color: var(--text-dim); margin-bottom: 1.5rem; }
.mpc-link {
  font-family: 'JetBrains Mono', monospace; font-size: 0.75rem;
  color: var(--accent-dim); letter-spacing: 0.05em;
}
.model-platform-card:hover .mpc-link { color: var(--accent); }

/* ═══ COMPARE ═══ */
.compare { padding: 8rem 3rem; border-bottom: 1px solid var(--border); }
.compare-inner { max-width: 1000px; margin: 0 auto; }
.compare-table {
  margin-top: 4rem; display: grid; grid-template-columns: 1fr 1fr 1fr;
  border: 1px solid var(--border);
}
.compare-cell {
  padding: 1.5rem 2rem; border-bottom: 1px solid var(--border);
  font-size: 0.9rem; line-height: 1.5; color: var(--text-dim);
}
.compare-cell:not(:nth-child(3n)) { border-right: 1px solid var(--border); }
.compare-header {
  background: var(--surface); font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--text);
}
.compare-header.highlight {
  background: rgba(240,192,64,0.08); color: var(--accent);
}
.highlight-col { background: rgba(240,192,64,0.03); }
.compare-check { color: var(--accent); font-weight: 600; }

/* ═══ PRICING ═══ */
.pricing {
  padding: 8rem 3rem; background: var(--surface); border-bottom: 1px solid var(--border);
}
.pricing-inner { max-width: 1200px; margin: 0 auto; }
.pricing-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem; margin-top: 4rem;
}
.price-card {
  border: 1px solid var(--border); background: var(--bg);
  padding: 2.5rem 2rem; position: relative; transition: all 0.4s ease;
}
.price-card:hover { border-color: var(--border-accent); transform: translateY(-4px); }
.price-card.featured {
  border-color: var(--accent-dim);
  background: linear-gradient(180deg, rgba(240,192,64,0.04) 0%, var(--bg) 100%);
}
.price-card.featured::before {
  content: 'BEST VALUE'; position: absolute; top: -1px; left: -1px; right: -1px;
  padding: 0.5rem; text-align: center; font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem; font-weight: 600; letter-spacing: 0.2em;
  background: var(--accent); color: var(--bg);
}
.price-card.featured { padding-top: 3.5rem; }
.price-term {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 1.5rem;
}
.price-amount { font-family: 'Instrument Serif', serif; font-size: 3rem; color: var(--white); line-height: 1; }
.price-amount span {
  font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; color: var(--text-muted); font-weight: 400;
}
.price-total {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  color: var(--text-muted); margin-top: 0.75rem; letter-spacing: 0.05em;
}
.price-divider { width: 100%; height: 1px; background: var(--border); margin: 2rem 0; }
.price-features { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.price-features li {
  font-size: 0.85rem; color: var(--text-dim); padding-left: 1.25rem; position: relative;
}
.price-features li::before {
  content: '→'; position: absolute; left: 0; color: var(--accent-dim); font-size: 0.8rem;
}
.price-btn {
  display: block; text-align: center; margin-top: 2rem; padding: 0.9rem;
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none;
  border: 1px solid var(--border-accent); color: var(--text-dim); transition: all 0.3s ease;
}
.price-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.price-card.featured .price-btn { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.price-card.featured .price-btn:hover { background: var(--white); border-color: var(--white); }
.price-buyout {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  color: var(--text-muted); margin-top: 0.75rem; letter-spacing: 0.05em;
  padding-top: 0.75rem; border-top: 1px dashed var(--border);
}
.price-buyout strong { color: var(--accent-dim); font-weight: 600; }

/* ═══ PRICING TOGGLE ═══ */
.pricing-toggle {
  display: flex; justify-content: center; gap: 0; margin-top: 2rem;
  border: 1px solid var(--border); width: fit-content; margin-left: auto; margin-right: auto;
}
.pricing-toggle button {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase; padding: 0.9rem 2rem;
  background: transparent; color: var(--text-dim); border: none; cursor: pointer;
  transition: all 0.3s ease;
}
.pricing-toggle button.active {
  background: var(--accent); color: var(--bg);
}
.pricing-toggle button:not(.active):hover {
  background: var(--surface-raised); color: var(--text);
}

/* ═══ PRICING SLIDER ═══ */
.pricing-slider {
  max-width: 500px; margin: 2rem auto 0; text-align: center;
}
.slider-labels {
  display: flex; justify-content: space-between;
  font-family: 'JetBrains Mono', monospace; font-size: 0.65rem;
  color: var(--text-muted); letter-spacing: 0.05em; text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.pricing-slider input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 4px;
  background: var(--border); outline: none; border-radius: 2px; cursor: pointer;
}
.pricing-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 20px; height: 20px;
  background: var(--accent); border-radius: 50%; cursor: pointer;
  border: 2px solid var(--bg);
}
.pricing-slider input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px; background: var(--accent);
  border-radius: 50%; cursor: pointer; border: 2px solid var(--bg);
}
.slider-value {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  color: var(--accent); margin-top: 0.5rem; letter-spacing: 0.05em;
}

/* ═══ SCOPE FEATURES (under slider) ═══ */
.scope-features {
  list-style: none; max-width: 600px; margin: 2.5rem auto 0;
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem;
  justify-content: center; padding: 0;
}
.scope-features li {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  color: var(--text-dim); letter-spacing: 0.03em;
  padding-left: 1rem; position: relative;
}
.scope-features li::before {
  content: '→'; position: absolute; left: 0; color: var(--accent-dim); font-size: 0.7rem;
}

/* ═══ PLATFORM ACCESS (under pricing) ═══ */
.platform-access-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem; margin-top: 4rem;
}
.platform-access {
  border: 1px solid var(--border);
  background: var(--bg); position: relative;
}
.platform-access-inner { padding: 3rem; }
.platform-access-badge {
  font-family: 'JetBrains Mono', monospace; font-size: 0.6rem; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 1.5rem;
}
.platform-access h3 {
  font-family: 'Syne', sans-serif; font-weight: 700;
  font-size: 1.35rem; color: var(--white); margin-bottom: 1rem; line-height: 1.2;
}
.platform-access p {
  font-size: 0.92rem; line-height: 1.7; color: var(--text-dim); margin-bottom: 1.5rem;
}
.platform-access p strong { color: var(--text); }
.platform-access-price {
  display: flex; align-items: baseline; gap: 0.25rem; margin-bottom: 2rem;
}
.platform-price-amount {
  font-family: 'Instrument Serif', serif; font-size: 2.5rem; color: var(--white); line-height: 1;
}
.platform-price-period {
  font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; color: var(--text-muted);
}
.platform-access-features {
  list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.6rem;
  margin-bottom: 2rem;
}
.platform-access-features li {
  font-size: 0.85rem; color: var(--text-dim); padding-left: 1.25rem; position: relative;
}
.platform-access-features li::before {
  content: '→'; position: absolute; left: 0; color: var(--accent-dim); font-size: 0.8rem;
}
.platform-access-note {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  color: var(--text-muted); letter-spacing: 0.03em;
  padding-top: 1.5rem; border-top: 1px dashed var(--border); margin-bottom: 0;
}

@media (max-width: 768px) {
  .platform-access-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .platform-access-inner { padding: 1.5rem; }
  .platform-price-amount { font-size: 2rem; }
}

/* ═══ SCOPE ═══ */
.scope { padding: 8rem 3rem; border-bottom: 1px solid var(--border); }
.scope-inner { max-width: 1200px; margin: 0 auto; }
.scope-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--border); margin-top: 4rem; border: 1px solid var(--border);
}
.scope-item { padding: 2.5rem; background: var(--bg); transition: all 0.3s ease; }
.scope-item:hover { background: var(--surface); }
.scope-icon { font-size: 1.5rem; margin-bottom: 1.25rem; display: block; }
.scope-item h3 {
  font-family: 'Syne', sans-serif; font-weight: 700;
  font-size: 1rem; color: var(--white); margin-bottom: 0.75rem;
}
.scope-item p { font-size: 0.85rem; line-height: 1.6; color: var(--text-dim); }

.scope-visual {
  margin-top: 4rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.scope-visual-item {
  aspect-ratio: 4/3; border: 1px solid var(--border); overflow: hidden; position: relative;
}
.scope-visual-item img { width: 100%; height: 100%; object-fit: cover; }
.scope-visual-item .sv-label {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 0.75rem 1rem; background: rgba(10,10,10,0.9);
  font-family: 'JetBrains Mono', monospace; font-size: 0.6rem;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim);
}

/* ═══ CTA ═══ */
.cta {
  padding: 10rem 3rem; text-align: center; position: relative; overflow: hidden;
}
.cta::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(240,192,64,0.04) 0%, transparent 60%);
  pointer-events: none;
}
.cta h2 {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: clamp(2.5rem, 6vw, 5rem); line-height: 1;
  color: var(--white); letter-spacing: -0.03em; max-width: 700px; margin: 0 auto;
}
.cta h2 em {
  font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; color: var(--accent);
}
.cta p {
  margin-top: 2rem; font-size: 1.05rem; color: var(--text-dim);
  max-width: 500px; margin-left: auto; margin-right: auto; line-height: 1.7;
}
.cta .btn-primary { margin-top: 3rem; }

/* ═══ FOOTER ═══ */
footer {
  padding: 3rem; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
}
.footer-left {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  color: var(--text-muted); letter-spacing: 0.05em;
}
.footer-right { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; color: var(--text-muted); }
.footer-right a {
  color: var(--text-dim); text-decoration: none; margin-left: 2rem; transition: color 0.3s ease;
}
.footer-right a:hover { color: var(--accent); }

/* ═══ ANIMATIONS ═══ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ═══ RESPONSIVE ═══ */

/* Tablet */
@media (max-width: 1024px) {
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .scope-grid { grid-template-columns: repeat(2, 1fr); }
  .scope-visual { grid-template-columns: 1fr 1fr; }
}

/* Small tablet / large phone */
@media (max-width: 768px) {
  nav { padding: 1rem 1.5rem; }
  .nav-hamburger { display: block; }
  .nav-links {
    display: flex; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    width: 100vw; height: 100vh; height: 100dvh;
    background: #0a0a0a;
    flex-direction: column; align-items: center; justify-content: center;
    gap: 2.5rem; z-index: 9999;
    opacity: 0; visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }
  .nav-links.open { opacity: 1; visibility: visible; }
  .nav-links a {
    font-size: 1.3rem; letter-spacing: 0.15em; color: var(--text);
    opacity: 0; transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), color 0.3s ease;
  }
  .nav-links a:nth-child(1) { transition-delay: 0s; }
  .nav-links a:nth-child(2) { transition-delay: 0.06s; }
  .nav-links a:nth-child(3) { transition-delay: 0.12s; }
  .nav-links a:nth-child(4) { transition-delay: 0.18s; }
  .nav-links a:nth-child(5) { transition-delay: 0.24s; }
  .nav-links a:nth-child(6) { transition-delay: 0.3s; }
  .nav-links.open a {
    opacity: 1; transform: translateY(0);
  }
  .nav-links a:hover { color: var(--accent); }
  .hero { padding: 7rem 1.5rem 3rem; }
  .hero-image { display: none; }
  .hero-stats { flex-direction: column; gap: 2rem; }
  .countdown-strip { flex-direction: column; gap: 1rem; padding: 1.5rem; }
  .countdown-strip .cd-retire { border-left: none; padding-left: 0; border-top: 1px solid var(--border); padding-top: 1rem; }
  .manifesto { padding: 4rem 1.5rem; }
  .manifesto-grid { grid-template-columns: 1fr; gap: 3rem; }
  .model { padding: 4rem 1.5rem; }
  .model-steps { grid-template-columns: 1fr; }
  .model-platform-cards { grid-template-columns: 1fr; }
  .compare { padding: 4rem 1.5rem; }
  .compare-table { grid-template-columns: 1fr; }
  .compare-cell:not(:nth-child(3n)) { border-right: none; }
  .pricing { padding: 4rem 1.5rem; }
  .pricing-grid { grid-template-columns: 1fr; }
  .scope { padding: 4rem 1.5rem; }
  .scope-grid { grid-template-columns: 1fr; }
  .scope-visual { grid-template-columns: 1fr; }
  .cta { padding: 5rem 1.5rem; }
  footer { flex-direction: column; gap: 1rem; text-align: center; }
  .hero-cta-row { flex-direction: column; align-items: flex-start; }
  .chat-window { display: none !important; }
  .chat-bubble { bottom: 1rem; right: 1rem; width: 48px; height: 48px; font-size: 1.2rem; }
}

/* Phone (iPhone SE: 375px, iPhone 14: 390px, iPhone Pro Max: 430px) */
@media (max-width: 480px) {
  nav { padding: 0.75rem 1rem; }
  .nav-logo { font-size: 0.75rem; }
  .hero { padding: 5.5rem 1rem 2rem; }
  .hero h1 { font-size: clamp(2rem, 10vw, 3rem); }
  .hero-eyebrow { font-size: 0.65rem; margin-bottom: 1.25rem; }
  .hero-sub { font-size: 0.95rem; margin-top: 1.5rem; }
  .countdown-strip { padding: 1rem; gap: 0.75rem; }
  .countdown-strip .cd-number { font-size: 2rem; min-width: auto; }
  .countdown-strip .cd-label { font-size: 0.6rem; }
  .hero-cta-row { margin-top: 1.5rem; gap: 1rem; }
  .btn-primary { padding: 0.9rem 1.5rem; font-size: 0.7rem; text-align: center; }
  .btn-ghost { font-size: 0.7rem; }
  .hero-stats { gap: 1.5rem; margin-top: 2.5rem; padding-top: 2rem; }
  .stat-num { font-size: 2.25rem; }
  .manifesto { padding: 3rem 1rem; }
  .model { padding: 3rem 1rem; }
  .step { padding: 1.5rem; }
  .step-num { font-size: 2.5rem; margin-bottom: 1rem; }
  .compare { padding: 3rem 1rem; }
  .compare-cell { padding: 1rem; }
  .pricing { padding: 3rem 1rem; }
  .price-card { padding: 1.5rem; }
  .price-amount { font-size: 2.25rem; }
  .pricing-toggle button { padding: 0.7rem 1.25rem; font-size: 0.6rem; }
  .scope { padding: 3rem 1rem; }
  .scope-item { padding: 1.5rem; }
  .cta { padding: 3rem 1rem; }
  .cta h2 { font-size: clamp(1.8rem, 8vw, 2.5rem); }
  footer { padding: 2rem 1rem; }
  .section-label { font-size: 0.6rem; }
  .section-title { font-size: clamp(1.5rem, 6vw, 2rem); margin-bottom: 2.5rem; }
  .page-header { padding: 5.5rem 1rem 2rem; }
  .content { padding: 0 1rem 3rem; }
}

/* ═══ CHAT BUBBLE ═══ */
.chat-bubble {
  position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 9999;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--accent); color: var(--bg); border: none;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  transition: all 0.3s ease;
}
.chat-bubble:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(240,192,64,0.3); }
.chat-bubble.hidden { display: none; }

.chat-window {
  position: fixed; bottom: 5rem; right: 1.5rem; z-index: 9998;
  width: 440px; height: 600px; border-radius: 12px;
  background: var(--bg); border: 1px solid var(--border);
  display: none; flex-direction: column;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
  overflow: hidden;
}
.chat-window.open { display: flex; }

.chat-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.chat-header-title {
  font-family: 'JetBrains Mono', monospace; font-size: 0.85rem;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent);
}
.chat-header-sub {
  font-family: 'JetBrains Mono', monospace; font-size: 0.65rem;
  color: var(--text-muted); letter-spacing: 0.03em;
}
.chat-close {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 1.2rem; padding: 0; line-height: 1;
}
.chat-close:hover { color: var(--white); }

.chat-messages {
  flex: 1; overflow-y: auto; padding: 1rem;
  display: flex; flex-direction: column; gap: 0.75rem;
  min-height: 0;
}
.chat-msg {
  font-size: 0.95rem; line-height: 1.6; padding: 0.75rem 1rem;
  border-radius: 8px; max-width: 85%; word-wrap: break-word;
}
.chat-msg.assistant {
  background: var(--surface); color: var(--text);
  align-self: flex-start; border-bottom-left-radius: 2px;
}
.chat-msg.user {
  background: var(--accent); color: var(--bg);
  align-self: flex-end; border-bottom-right-radius: 2px;
}
.chat-msg.typing {
  background: var(--surface); color: var(--text-muted);
  align-self: flex-start; font-style: italic;
}

.chat-input-row {
  display: flex; border-top: 1px solid var(--border); padding: 0.5rem;
  gap: 0.5rem; background: var(--surface);
}
.chat-input {
  flex: 1; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); padding: 0.6rem 0.75rem; border-radius: 6px;
  font-family: inherit; font-size: 0.95rem; outline: none;
  resize: none; min-height: 36px; max-height: 80px;
}
.chat-input:focus { border-color: var(--accent-dim); }
.chat-input::placeholder { color: var(--text-muted); }
.chat-send {
  background: var(--accent); color: var(--bg); border: none;
  padding: 0 0.75rem; border-radius: 6px; cursor: pointer;
  font-family: 'JetBrains Mono', monospace; font-size: 0.65rem;
  font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
}
.chat-send:hover { background: var(--white); }
.chat-send:disabled { opacity: 0.4; cursor: not-allowed; }

/* ═══ ABOUT PAGE ═══ */
.page-header {
  padding: 8rem 3rem 4rem; max-width: 800px; margin: 0 auto;
}
.page-header .label {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); margin-bottom: 2rem;
}
.page-header h1 {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: clamp(2.5rem, 6vw, 4.5rem); line-height: 1;
  color: var(--white); letter-spacing: -0.03em;
}
.page-header h1 em {
  font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; color: var(--accent);
}
.page-header .intro {
  margin-top: 2rem; font-size: 1.1rem; line-height: 1.7; color: var(--text-dim); max-width: 600px;
}

.content {
  max-width: 800px; margin: 0 auto; padding: 0 3rem 6rem;
}
.content h2 {
  font-family: 'Syne', sans-serif; font-weight: 700;
  font-size: 1.5rem; color: var(--white); margin: 3rem 0 1.5rem; letter-spacing: -0.01em;
}
.content p {
  font-size: 1rem; line-height: 1.8; color: var(--text-dim); margin-bottom: 1.5rem;
}
.content strong { color: var(--text); font-weight: 600; }

.timeline-toggle {
  display: flex; gap: 0; border: 1px solid var(--border); width: fit-content; margin-bottom: 2rem;
}
.timeline-toggle button {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase; padding: 0.75rem 1.5rem;
  background: transparent; color: var(--text-dim); border: none; cursor: pointer;
  transition: all 0.3s ease;
}
.timeline-toggle button.active {
  background: var(--accent); color: var(--bg);
}
.timeline-toggle button:not(.active):hover {
  background: var(--surface-raised); color: var(--text);
}

.timeline {
  list-style: none; padding: 0 0 0 1.5rem; margin: 0 0 3rem;
  border-left: 2px solid var(--border);
}
.timeline li {
  padding: 1.5rem 0 1.5rem 1.5rem; border-bottom: 1px solid var(--border);
  position: relative;
}
.timeline li::before {
  content: ''; position: absolute; left: -1.5rem; top: 2rem;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border); border: 2px solid var(--bg);
  transform: translateX(-50%);
}
.timeline li.highlight::before { background: var(--accent); }
.timeline li.highlight { border-left: none; padding-left: 1.5rem; }
.timeline .year {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  letter-spacing: 0.1em; color: var(--accent); display: block; margin-bottom: 0.5rem;
}
.timeline .title {
  font-family: 'Syne', sans-serif; font-weight: 700;
  font-size: 1rem; color: var(--white); margin-bottom: 0.5rem;
}
.timeline .desc {
  font-size: 0.9rem; line-height: 1.6; color: var(--text-dim);
}

.back-link {
  display: inline-block; margin-top: 2rem;
  font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; letter-spacing: 0.05em;
  color: var(--accent); text-decoration: none; transition: color 0.3s ease;
}
.back-link:hover { color: var(--white); }

/* ═══ CHAT PAGE (full-screen /chat/) ═══ */
.chat-page {
  display: flex; flex-direction: column;
  height: 100vh; height: 100dvh;
  max-width: 800px; margin: 0 auto;
  background: var(--bg);
}
.chat-page-header {
  display: flex; align-items: center; gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}
.chat-page-logo {
  font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.08em; color: var(--accent); text-transform: uppercase;
  text-decoration: none;
}
.chat-page-logo:hover { color: var(--white); }
.chat-page-label {
  font-family: 'JetBrains Mono', monospace; font-size: 0.6rem;
  color: var(--text-muted); letter-spacing: 0.05em;
  padding-left: 1rem; border-left: 1px solid var(--border);
}
.chat-page-messages {
  flex: 1; overflow-y: auto; padding: 1.5rem;
  display: flex; flex-direction: column; gap: 1rem;
  min-height: 0;
}
.chat-page-messages .chat-msg {
  font-size: 0.95rem; line-height: 1.6; padding: 0.75rem 1rem;
  border-radius: 10px; max-width: 75%; word-wrap: break-word;
}
.chat-page-messages .chat-msg.assistant {
  background: var(--surface); color: var(--text);
  align-self: flex-start; border-bottom-left-radius: 2px;
}
.chat-page-messages .chat-msg.user {
  background: var(--accent); color: var(--bg);
  align-self: flex-end; border-bottom-right-radius: 2px;
}
.chat-page-messages .chat-msg.typing {
  background: var(--surface); color: var(--text-muted);
  align-self: flex-start; font-style: italic;
}
.chat-page-input-row {
  display: flex; gap: 0.75rem; padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--surface); flex-shrink: 0;
}
.chat-page-input-row .chat-input {
  flex: 1; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); padding: 0.75rem 1rem; border-radius: 8px;
  font-family: inherit; font-size: 1rem; outline: none;
  resize: none; min-height: 44px; max-height: 120px;
}
.chat-page-input-row .chat-input:focus { border-color: var(--accent-dim); }
.chat-page-input-row .chat-input::placeholder { color: var(--text-muted); }
.chat-page-input-row .chat-send {
  background: var(--accent); color: var(--bg); border: none;
  padding: 0 1.25rem; border-radius: 8px; cursor: pointer;
  font-family: 'JetBrains Mono', monospace; font-size: 0.75rem;
  font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  align-self: flex-end; min-height: 44px;
}
.chat-page-input-row .chat-send:hover { background: var(--white); }
.chat-page-input-row .chat-send:disabled { opacity: 0.4; cursor: not-allowed; }

@media (max-width: 480px) {
  .chat-page-header { padding: 0.75rem 1rem; }
  .chat-page-messages { padding: 1rem; }
  .chat-page-messages .chat-msg { max-width: 90%; font-size: 0.9rem; }
  .chat-page-input-row { padding: 0.75rem 1rem; }
  .chat-page-input-row .chat-input { font-size: 16px; }
}