@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@300;400;500&family=Syne:wght@700;800&display=swap');

/* ── Reset & tokens ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:     #080806;
  --ink2:    #0f0f0d;
  --ink3:    #1a1a16;
  --ink4:    #282820;
  --ink5:    #383830;
  --ink6:    #484840;
  --chalk:   #f4f0e8;
  --chalk2:  #eae4d8;
  --chalk3:  #c8c0b0;
  --chalk4:  #8a8478;
  --chalk5:  #5a5448;
  --ember:   #e85d04;
  --ember2:  #f97316;
  --max-w:   1100px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--chalk);
  font-family: 'DM Mono', monospace;
  font-size: 14px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Typography ──────────────────────────────────────────────── */
.syne { font-family: 'Syne', sans-serif; font-weight: 800; }

/* ── Shared components ───────────────────────────────────────── */
.em { color: var(--ember); }

.section-eyebrow {
  font-size: 9px;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--ink6);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 0;
}

.eyebrow-line {
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--ember);
  flex-shrink: 0;
}

.hero-rule, .cta-rule {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-top: 24px;
  margin-bottom: 28px;
}
.rule-long  { width: 80px; height: 2px; background: var(--chalk); }
.rule-em    { width: 20px; height: 6px; background: var(--ember); }
.rule-short { width: 32px; height: 1px; background: var(--ink5); }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ember);
  color: var(--ink);
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 14px 24px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  text-decoration: none;
  border-radius: 2px;
}
.btn-primary:hover { background: var(--ember2); color: var(--ink); transform: translateY(-1px); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--chalk4);
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 14px 24px;
  border: 1px solid var(--ink5);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  text-decoration: none;
  border-radius: 2px;
}
.btn-ghost:hover { border-color: var(--chalk4); color: var(--chalk); }

/* ── NAV ─────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 60px;
  background: rgba(8,8,6,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ink4);
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -1px;
  color: var(--chalk);
  text-decoration: none;
}
.nav-logo span { color: var(--ember); }
.nav-logo:hover { color: var(--chalk); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--ink6);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-link:hover, .nav-link.active { color: var(--chalk); }

.nav-cta {
  font-family: 'DM Mono', monospace;
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: var(--ember);
  color: var(--ink);
  padding: 8px 16px;
  border-radius: 2px;
  text-decoration: none;
  transition: background 0.15s;
}
.nav-cta:hover { background: var(--ember2); color: var(--ink); }

@media (max-width: 600px) {
  .nav { padding: 0 20px; }
  .nav-links { gap: 16px; }
  .nav-link { display: none; }
}

/* ── HERO ────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: calc(100vh - 60px);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 60px;
  padding: 80px 40px 80px 80px;
  max-width: var(--max-w);
  margin: 0 auto;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ink3) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink3) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.6;
  pointer-events: none;
  animation: gridDrift 18s linear infinite;
}

.hero-diag {
  position: absolute;
  top: 0; right: 200px;
  width: 1px;
  height: 100%;
  background: var(--ember);
  opacity: 0.08;
  transform: rotate(8deg);
  transform-origin: top center;
  pointer-events: none;
  animation: diagPulse 7s ease-in-out infinite;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 580px;
}

.hero-eyebrow {
  font-size: 9px;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--ink6);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.hero-word {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(80px, 12vw, 140px);
  letter-spacing: -6px;
  line-height: 0.84;
  color: var(--chalk);
  text-transform: uppercase;
}

.hero-sub {
  font-size: 13px;
  line-height: 2;
  color: var(--chalk5);
  letter-spacing: 1px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.hero-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--ink4);
}

.meta-item {
  font-size: 9px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--ink6);
  display: flex;
  align-items: center;
  gap: 12px;
}
.meta-item span { color: var(--ember); opacity: 0.7; }

/* App icon hero */
.hero-icon-wrap {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-shadow {
  position: absolute;
  width: 220px;
  height: 220px;
  background: var(--ember);
  opacity: 0.08;
  border-radius: 50%;
  filter: blur(40px);
}

.app-icon-lg {
  width: 200px;
  height: 200px;
  background: var(--ink3);
  border-radius: 46px;
  border: 1px solid var(--ink4);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  overflow: hidden;
  position: relative;
  box-shadow: 0 8px 64px rgba(0,0,0,0.8), 0 0 0 0.5px var(--ink5);
}

.app-icon-bar {
  width: 100%;
  height: 8px;
  background: var(--ember);
  flex-shrink: 0;
  border-radius: 46px 46px 0 0;
}

.app-icon-inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 20px 20px;
  width: 100%;
}

.app-icon-word {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 76px;
  letter-spacing: -4px;
  line-height: 0.85;
  color: var(--chalk);
}
.app-icon-word span { color: var(--ember); }

.app-icon-sub {
  font-family: 'DM Mono', monospace;
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--chalk5);
  margin-top: 6px;
}

@media (max-width: 800px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 60px 24px;
    min-height: auto;
    gap: 48px;
  }
  .hero-icon-wrap { display: none; }
  .hero-bg-grid { opacity: 0.3; }
}

/* ── HOW IT WORKS ────────────────────────────────────────────── */
.how {
  border-top: 1px solid var(--ink4);
  padding: 80px 80px 80px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-head {
  margin-bottom: 52px;
}

.steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: start;
}

.step {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-num {
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--ember);
  font-weight: 400;
}

.step-body { display: flex; flex-direction: column; gap: 12px; }

.step-icon {
  width: 44px;
  height: 44px;
  border: 1px solid var(--ink4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ember);
  border-radius: 2px;
  flex-shrink: 0;
}

.step-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
  color: var(--chalk);
}

.step-text {
  font-size: 12px;
  line-height: 1.8;
  color: var(--chalk5);
  max-width: 280px;
}

.step-divider {
  width: 1px;
  background: var(--ink4);
  align-self: stretch;
  margin: 0 40px;
  position: relative;
}
.step-divider::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: 5px;
  height: 5px;
  background: var(--ember);
  border-radius: 50%;
}

@media (max-width: 900px) {
  .how { padding: 60px 24px; }
  .steps {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .step-divider { display: none; }
  .step-text { max-width: none; }
}

/* ── FEATURES ────────────────────────────────────────────────── */
.features {
  border-top: 1px solid var(--ink4);
  padding: 80px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--ink4);
  margin-top: 40px;
}

.feature-card {
  padding: 32px 28px;
  border-right: 1px solid var(--ink4);
  border-bottom: 1px solid var(--ink4);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 0.15s;
}
.feature-card:hover { background: var(--ink2); }
.feature-card:nth-child(3n) { border-right: none; }
.feature-card:nth-child(4), .feature-card:nth-child(5), .feature-card:nth-child(6) { border-bottom: none; }

.feature-num {
  font-size: 8px;
  letter-spacing: 2px;
  color: var(--ember);
}

.feature-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 15px;
  color: var(--chalk);
  letter-spacing: -0.3px;
}

.feature-text {
  font-size: 11px;
  line-height: 1.8;
  color: var(--chalk5);
}

@media (max-width: 900px) {
  .features { padding: 60px 24px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-card:nth-child(3n) { border-right: 1px solid var(--ink4); }
  .feature-card:nth-child(2n) { border-right: none; }
  .feature-card:nth-child(4), .feature-card:nth-child(5), .feature-card:nth-child(6) { border-bottom: 1px solid var(--ink4); }
  .feature-card:nth-child(5), .feature-card:nth-child(6) { border-bottom: none; }
}
@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { border-right: none !important; }
  .feature-card:last-child { border-bottom: none; }
}

/* ── CTA SECTION ─────────────────────────────────────────────── */
.cta-section {
  border-top: 1px solid var(--ink4);
  padding: 100px 80px;
}

.cta-inner {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.cta-word {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(48px, 8vw, 80px);
  letter-spacing: -4px;
  color: var(--chalk);
}

.cta-sub {
  font-size: 12px;
  line-height: 1.8;
  color: var(--chalk5);
  margin-bottom: 28px;
  max-width: 420px;
}

.cta-form {
  display: flex;
  gap: 8px;
  width: 100%;
  flex-wrap: wrap;
}

.cta-input {
  flex: 1;
  min-width: 220px;
  background: var(--ink3);
  border: 1px solid var(--ink4);
  color: var(--chalk);
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  padding: 14px 16px;
  outline: none;
  border-radius: 2px;
  transition: border-color 0.15s;
}
.cta-input:focus { border-color: var(--ember); }
.cta-input::placeholder { color: var(--ink6); }

@media (max-width: 600px) {
  .cta-section { padding: 60px 24px; }
}

/* ── FOOTER ──────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--ink4);
  padding: 32px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -1px;
  color: var(--chalk);
}
.footer-logo span { color: var(--ember); }

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-links a {
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--ink6);
  transition: color 0.15s;
}
.footer-links a:hover { color: var(--chalk); }

.footer-copy {
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--ink5);
}

.footer-coords {
  font-size: 8px;
  letter-spacing: 2px;
  color: var(--ink5);
  text-transform: uppercase;
}

/* ── PAGE HERO (inner pages) ─────────────────────────────────── */
.page-hero {
  border-bottom: 1px solid var(--ink4);
  padding: 80px 80px 64px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ink3) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink3) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.5;
}

.page-hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
}

.page-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(60px, 10vw, 100px);
  letter-spacing: -5px;
  line-height: 0.86;
  color: var(--chalk);
  margin-top: 16px;
}

@media (max-width: 600px) {
  .page-hero { padding: 60px 24px 48px; }
}

/* ── PRIVACY DOC ─────────────────────────────────────────────── */
.doc-section {
  padding: 60px 80px 100px;
}

.doc-inner {
  max-width: 700px;
  margin: 0 auto;
}

.doc-meta {
  display: flex;
  gap: 32px;
  padding: 20px 0 40px;
  border-bottom: 1px solid var(--ink4);
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.doc-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.doc-meta-item span {
  font-size: 8px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--ink6);
}
.doc-meta-item { font-size: 11px; color: var(--chalk4); }

.doc-block {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--ink4);
}
.doc-block:last-child { border-bottom: none; }

.doc-num {
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--ember);
  padding-top: 4px;
}

.doc-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.5px;
  color: var(--chalk);
  margin-bottom: 14px;
}

.doc-content p {
  font-size: 12px;
  line-height: 1.9;
  color: var(--chalk5);
  margin-bottom: 12px;
}
.doc-content p:last-child { margin-bottom: 0; }

.doc-list {
  margin: 12px 0 12px 0;
  padding-left: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.doc-list li {
  font-size: 12px;
  line-height: 1.8;
  color: var(--chalk5);
  padding-left: 20px;
  position: relative;
}
.doc-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--ember);
}
.doc-list li strong { color: var(--chalk3); font-weight: 400; }

.doc-content a { color: var(--ember2); text-decoration: underline; text-underline-offset: 3px; }
.doc-content a:hover { color: var(--ember); }

.doc-contact {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border: 1px solid var(--ink4);
  padding: 20px;
  border-radius: 2px;
}
.contact-line {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 11px;
}
.contact-line span {
  font-size: 8px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--ink6);
  width: 40px;
  flex-shrink: 0;
}
.contact-line a { color: var(--ember2); }

@media (max-width: 600px) {
  .doc-section { padding: 40px 24px 80px; }
  .doc-block { grid-template-columns: 1fr; gap: 8px; }
}

/* ── CONTACT PAGE ────────────────────────────────────────────── */
.contact-section {
  padding: 60px 80px 100px;
}

.contact-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 80px;
  align-items: start;
}

.contact-form-wrap { max-width: 560px; }

/* Form fields */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field label {
  font-size: 8px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--ink6);
}

.field input, .field select, .field textarea {
  background: var(--ink3);
  border: 1px solid var(--ink4);
  color: var(--chalk);
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  padding: 12px 14px;
  outline: none;
  border-radius: 2px;
  transition: border-color 0.15s;
  width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--ember); }
.field input::placeholder, .field textarea::placeholder { color: var(--ink6); }
.field select { appearance: none; cursor: pointer; }
.field select option { background: var(--ink3); }
.field textarea { resize: vertical; min-height: 120px; line-height: 1.6; }

.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.form-note {
  font-size: 10px;
  color: var(--ink6);
  letter-spacing: 1px;
}

.form-error {
  font-size: 11px;
  color: var(--ember2);
  letter-spacing: 0.5px;
  padding: 12px 14px;
  border: 1px solid rgba(232,93,4,0.3);
  border-radius: 2px;
  margin-top: 16px;
}

.form-success { padding-top: 24px; }
.success-rule { display: flex; gap: 4px; align-items: center; margin-bottom: 16px; }
.success-text { font-size: 12px; color: var(--chalk5); letter-spacing: 1px; }

/* Info sidebar */
.contact-info {
  padding-top: 4px;
}

.info-block {
  margin-bottom: 28px;
}

.info-label {
  font-size: 8px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--ink6);
  margin-bottom: 6px;
}

.info-value {
  font-size: 12px;
  color: var(--chalk4);
  line-height: 1.6;
}
.info-value a { color: var(--ember2); }
.info-value a:hover { color: var(--ember); }

.info-sub {
  font-size: 10px;
  color: var(--ink6);
  letter-spacing: 1px;
}

.info-divider {
  height: 1px;
  background: var(--ink4);
  margin: 32px 0;
}

.topic-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic {
  font-size: 11px;
  color: var(--chalk5);
  padding: 8px 12px;
  border: 1px solid var(--ink4);
  border-radius: 2px;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: border-color 0.15s, color 0.15s;
}
.topic::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--ember);
  border-radius: 50%;
  flex-shrink: 0;
}
.topic:hover { border-color: var(--ink5); color: var(--chalk3); }

@media (max-width: 860px) {
  .contact-section { padding: 40px 24px 80px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .field-row { grid-template-columns: 1fr; }
}

/* ── Animations ──────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}

.hero-inner    { animation: fadeUp .6s ease both; animation-delay: .1s; }
.hero-icon-wrap{ animation: fadeUp .6s ease both; animation-delay: .25s; }
.how           { animation: fadeUp .5s ease both; animation-delay: .1s; }
.features      { animation: fadeUp .5s ease both; animation-delay: .15s; }
.cta-section   { animation: fadeUp .5s ease both; animation-delay: .1s; }
.page-hero-inner { animation: fadeUp .5s ease both; animation-delay: .1s; }
.doc-inner     { animation: fadeUp .5s ease both; animation-delay: .15s; }
.contact-grid  { animation: fadeUp .5s ease both; animation-delay: .15s; }

/* ── Dynamic ambient animations ─────────────────────────────────────── */
@keyframes gridDrift {
  from { background-position: 0 0, 0 0; }
  to   { background-position: 48px 48px, 48px 48px; }
}

@keyframes diagPulse {
  0%, 100% { opacity: 0.08; transform: rotate(8deg) scaleY(1); }
  50%       { opacity: 0.18; transform: rotate(8deg) scaleY(1.04); }
}

@keyframes rulePulse {
  0%, 100% { width: 80px; }
  55%       { width: 112px; }
}

@keyframes eyebrowExpand {
  0%, 100% { width: 20px; }
  50%       { width: 36px; }
}

.rule-long    { animation: rulePulse 5s ease-in-out infinite; }
.eyebrow-line { animation: eyebrowExpand 4s ease-in-out infinite; }

/* Extra ambient diagonal lines on hero */
.hero::before {
  content: '';
  position: absolute;
  top: 0; right: 80px;
  width: 1px; height: 100%;
  background: var(--chalk);
  opacity: 0;
  transform: rotate(14deg);
  transform-origin: top center;
  pointer-events: none;
  animation: ambientDiag1 12s ease-in-out 2s infinite;
}
.hero::after {
  content: '';
  position: absolute;
  top: 0; right: 340px;
  width: 1px; height: 100%;
  background: var(--ember);
  opacity: 0;
  transform: rotate(-5deg);
  transform-origin: bottom center;
  pointer-events: none;
  animation: ambientDiag2 9s ease-in-out 4s infinite;
}
@keyframes ambientDiag1 {
  0%, 100% { opacity: 0; }
  40%, 60%  { opacity: 0.04; }
}
@keyframes ambientDiag2 {
  0%, 100% { opacity: 0; }
  35%, 65%  { opacity: 0.06; }
}

/* ── Section nav ─────────────────────────────────────────────────────── */
.section-nav {
  position: sticky;
  top: 60px;
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  height: 40px;
  background: rgba(8,8,6,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ink4);
}

.snav-item {
  font-size: 8px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--ink6);
  text-decoration: none;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  position: relative;
  transition: color 0.15s;
}
.snav-item::after {
  content: '';
  position: absolute;
  bottom: 0; left: 20px; right: 20px;
  height: 2px;
  background: var(--ember);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}
.snav-item:hover { color: var(--chalk4); }
.snav-item.is-active { color: var(--chalk); }
.snav-item.is-active::after { transform: scaleX(1); }

.snav-sep {
  width: 1px;
  height: 16px;
  background: var(--ink4);
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .snav-item { padding: 0 14px; font-size: 7px; letter-spacing: 2px; }
}

/* ── Feature showcase (carousel) ─────────────────────────────────────── */
.feature-showcase {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 64px;
  align-items: center;
  margin-top: 48px;
}

/* Feature list */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.feature-item {
  padding: 16px 20px;
  border-left: 2px solid var(--ink4);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, background 0.2s;
}
.feature-item + .feature-item { margin-top: 2px; }
.feature-item:hover { background: rgba(255,255,255,0.02); }
.feature-item.is-active {
  border-left-color: var(--ember);
  background: rgba(232,93,4,0.05);
}

.fi-meta {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.fi-num {
  font-size: 8px;
  letter-spacing: 2px;
  color: var(--ember);
  flex-shrink: 0;
  transition: opacity 0.2s;
}
.feature-item:not(.is-active) .fi-num { opacity: 0.5; }

.fi-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.3px;
  color: var(--chalk3);
  transition: color 0.2s;
}
.feature-item.is-active .fi-title { color: var(--chalk); }

.fi-text {
  font-size: 11px;
  line-height: 1.8;
  color: var(--chalk5);
  margin-top: 8px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.35s ease, opacity 0.3s ease;
}
.feature-item.is-active .fi-text { max-height: 100px; opacity: 1; }

.fi-bar {
  position: absolute;
  bottom: 0; left: 0;
  height: 2px;
  background: var(--ember);
  width: 0;
  opacity: 0.4;
}
.feature-item.is-active .fi-bar {
  animation: fiBarFill 4s linear forwards;
}
@keyframes fiBarFill {
  from { width: 0; }
  to   { width: 100%; }
}

/* Device frame */
.feature-preview {
  display: flex;
  justify-content: center;
  align-items: center;
}

.fp-device {
  width: 270px;
  height: 560px;
  background: var(--ink2);
  border: 1.5px solid var(--ink5);
  border-radius: 44px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow:
    0 0 0 0.5px var(--ink4),
    0 32px 80px rgba(0,0,0,0.85),
    0 0 80px rgba(232,93,4,0.04);
  flex-shrink: 0;
}

.fp-device-bar {
  height: 6px;
  background: var(--ember);
  border-radius: 44px 44px 0 0;
  flex-shrink: 0;
}

.fp-notch-row {
  display: flex;
  justify-content: center;
  padding: 8px 0;
  flex-shrink: 0;
}

.fp-notch {
  width: 96px;
  height: 26px;
  background: var(--ink);
  border-radius: 0 0 18px 18px;
  border: 1px solid var(--ink4);
  border-top: none;
}

.fp-screen {
  flex: 1;
  position: relative;
  overflow: hidden;
}

/* Slides */
.feature-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.45s ease, transform 0.45s ease;
  pointer-events: none;
  padding: 0 4px 4px;
}
.feature-slide.is-active {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.fps-content {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.fps-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px 8px;
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--chalk4);
  border-bottom: 1px solid var(--ink4);
  flex-shrink: 0;
}

.fps-count {
  color: var(--ember);
  font-size: 8px;
}

/* F-01 Card Library */
.fps-cards {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 8px 10px;
  overflow: hidden;
}

.fps-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 10px;
  border: 1px solid var(--ink4);
  border-radius: 2px;
  background: var(--ink3);
  transition: border-color 0.15s;
}
.fps-card-em { border-color: var(--ember); background: rgba(232,93,4,0.06); }

.fps-cname { font-size: 10px; color: var(--chalk3); letter-spacing: 0.5px; }
.fps-ctag  { font-size: 7px; letter-spacing: 2px; text-transform: uppercase; color: var(--ink6); }
.fps-card-em .fps-ctag { color: var(--ember); opacity: 0.7; }

/* F-02 Decks */
.fps-decks {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 10px;
}

.fps-deck {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--ink4);
  border-left-width: 3px;
  border-radius: 2px;
  background: var(--ink3);
}
.fps-deck-em { border-left-color: var(--ember); background: rgba(232,93,4,0.05); }

.fps-deck-name { font-size: 11px; color: var(--chalk3); font-family: 'Syne', sans-serif; font-weight: 700; }
.fps-deck-meta { font-size: 7px; letter-spacing: 2px; text-transform: uppercase; color: var(--ink6); }
.fps-deck-em .fps-deck-name { color: var(--chalk); }

/* F-03 Plans */
.fps-plan {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 10px;
}

.fps-plan-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid var(--ink4);
  border-radius: 2px;
  background: var(--ink3);
}
.fps-plan-em { border-color: rgba(232,93,4,0.5); background: rgba(232,93,4,0.05); }

.fps-drag  { color: var(--ink6); font-size: 10px; flex-shrink: 0; }
.fps-pname { flex: 1; font-size: 10px; color: var(--chalk3); }
.fps-psets { font-size: 8px; letter-spacing: 1px; color: var(--chalk5); flex-shrink: 0; }
.fps-plan-em .fps-pname { color: var(--chalk); }
.fps-plan-em .fps-psets { color: var(--ember); }

/* F-04 Weight Logging */
.fps-log {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 10px;
}

.fps-log-hdr {
  display: grid;
  grid-template-columns: 24px 1fr 1fr 20px;
  gap: 8px;
  padding: 4px 10px 8px;
  font-size: 7px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--ink6);
}

.fps-log-row {
  display: grid;
  grid-template-columns: 24px 1fr 1fr 20px;
  gap: 8px;
  align-items: center;
  padding: 10px 10px;
  border: 1px solid var(--ink4);
  border-radius: 2px;
  background: var(--ink3);
  font-size: 10px;
  color: var(--chalk4);
}
.fps-log-done   { color: var(--chalk5); border-color: var(--ink4); }
.fps-log-active { border-color: var(--ember); background: rgba(232,93,4,0.06); color: var(--chalk); }
.fps-log-dim    { opacity: 0.45; }

.fps-tick { color: var(--ember); font-size: 10px; }

.fps-dot-live {
  display: inline-block;
  width: 7px; height: 7px;
  background: var(--ember);
  border-radius: 50%;
  animation: livePulse 1s ease-in-out infinite;
}
@keyframes livePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

/* F-05 RPE */
.fps-rpe {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex: 1;
  padding: 24px 16px;
}

.fps-rpe-label {
  font-size: 8px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--ink6);
  text-align: center;
}

.fps-rpe-dots {
  display: flex;
  gap: 10px;
}

.fps-rdot {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--ink5);
  background: var(--ink3);
  transition: border-color 0.2s, background 0.2s;
}
.fps-rdot-on  { border-color: var(--ember); background: rgba(232,93,4,0.15); }
.fps-rdot-em  { background: var(--ember); border-color: var(--ember); box-shadow: 0 0 12px rgba(232,93,4,0.4); }

.fps-rpe-val {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.5px;
  color: var(--chalk);
}

.fps-rpe-note {
  font-size: 9px;
  line-height: 1.7;
  color: var(--chalk5);
  text-align: center;
  max-width: 200px;
}

/* F-06 History */
.fps-history {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 10px;
}

.fps-hist-row {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--ink4);
  border-left-width: 2px;
  border-left-color: transparent;
  border-radius: 2px;
  background: var(--ink3);
}
.fps-hist-em { border-left-color: var(--ember); background: rgba(232,93,4,0.05); }

.fps-hdate { font-size: 8px; letter-spacing: 1px; color: var(--ink6); text-transform: uppercase; }
.fps-hname { font-size: 10px; color: var(--chalk4); }
.fps-hrpe  { font-size: 7px; letter-spacing: 1px; color: var(--ink6); }
.fps-hist-em .fps-hname { color: var(--chalk); }
.fps-hist-em .fps-hrpe  { color: var(--ember); opacity: 0.7; }

/* Feature showcase responsive */
@media (max-width: 900px) {
  .feature-showcase {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .feature-preview { order: -1; }
  .fp-device {
    width: 240px;
    height: 490px;
  }
}
@media (max-width: 600px) {
  .fp-device { width: 220px; height: 450px; }
}