/* EmberAI site. Layout: a night-sky hero where the fan chart glows like coals, then calm daylight sections. */
:root {
  --ink: #16202e;        /* text */
  --ink-2: #4c5869;      /* secondary text */
  --paper: #f5f6f8;      /* page */
  --card: #ffffff;
  --line: #dfe3e9;
  --night: #121a28;      /* hero ground (both themes) */
  --night-2: #1d2738;
  --on-night: #eef1f6;
  --on-night-2: #a6b0c0;
  --ember: #e8501c;      /* brand flame */
  --amber: #ffb224;
  --ember-text: #c23e0f; /* ember that reads on light ground */
  --good: #1f8a55;
  --display: 'Bricolage Grotesque', 'Avenir Next', 'Segoe UI', system-ui, sans-serif;
  --body: 'Figtree', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --wrap: 1120px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --ink: #e8ecf2; --ink-2: #a3adbd; --paper: #0c121c; --card: #151e2c; --line: #263246;
    --night: #070b12; --night-2: #121a28; --ember-text: #ff7a45; --good: #3fbf7f; color-scheme: dark;
  }
}
:root[data-theme='dark'] {
  --ink: #e8ecf2; --ink-2: #a3adbd; --paper: #0c121c; --card: #151e2c; --line: #263246;
  --night: #070b12; --night-2: #121a28; --ember-text: #ff7a45; --good: #3fbf7f; color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--body); -webkit-font-smoothing: antialiased; }
a { color: var(--ember-text); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { font-family: var(--display); line-height: 1.08; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.eyebrow { font: 600 13px/1 var(--body); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ember-text); }

/* Header */
.top { background: var(--night); color: var(--on-night); }
.nav { display: flex; align-items: center; gap: 24px; padding-block: 18px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--on-night); text-decoration: none; font: 700 20px/1 var(--display); }
.brand-sub { font-weight: 500; color: var(--on-night-2); }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; flex-wrap: wrap; }
.nav-links a { color: var(--on-night-2); text-decoration: none; font-weight: 500; font-size: 15px; }
.nav-links a:hover { color: var(--on-night); }

/* Hero */
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; padding-block: 56px 88px; }
.hero > * { min-width: 0; }
.hero h1 { font-size: clamp(40px, 6vw, 68px); font-weight: 700; color: var(--on-night); }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, var(--ember), var(--amber)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lede { color: var(--on-night-2); font-size: 19px; max-width: 34em; margin-top: 20px; }
.cta { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-top: 30px; }
.btn { display: inline-flex; align-items: center; gap: 10px; border-radius: 12px; padding: 13px 20px; font: 600 16px/1 var(--body); text-decoration: none; border: 0; cursor: pointer; }
.btn-store { background: var(--on-night); color: var(--night); }
.btn-store small { display: block; font-size: 11px; font-weight: 500; opacity: 0.7; margin-bottom: 3px; }
.btn-store svg { width: 22px; height: 22px; }
.trial { color: var(--on-night-2); font-size: 15px; }
.trial strong { color: var(--amber); font-weight: 600; }

.chart-card { background: linear-gradient(180deg, var(--night-2), var(--night)); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 22px; padding: 22px 22px 16px; box-shadow: 0 30px 80px -30px rgba(232, 80, 28, 0.45); }
.chart-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.chart-head .label { color: var(--on-night-2); font-size: 14px; }
.chart-head .pct { font: 700 40px/1 var(--mono); color: var(--on-night); }
.pill { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: var(--on-night); background: rgba(255, 178, 36, 0.14); border-radius: 999px; padding: 4px 10px; }
.pill::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--amber); }
.fan { width: 100%; height: auto; display: block; margin-top: 10px; }
.fan-median { fill: none; stroke: var(--amber); stroke-width: 2.5; }
.fan-target { stroke: var(--on-night-2); stroke-dasharray: 5 5; stroke-width: 1.2; }
.fan-marker { stroke: rgba(255, 255, 255, 0.22); stroke-dasharray: 4 4; }
.fan-label, .fan-axis { fill: var(--on-night-2); font: 500 11px var(--body); }
.chart-note { color: var(--on-night-2); font-size: 12.5px; margin-top: 8px; }

/* Sections */
section { padding-block: 84px; }
.section-head { max-width: 40em; display: grid; gap: 14px; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(30px, 4vw, 44px); }
.section-head p { color: var(--ink-2); font-size: 18px; }

.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; display: grid; gap: 10px; align-content: start; }
.feature h3 { font-size: 21px; }
.feature p { color: var(--ink-2); font-size: 16px; }
.feature ul { margin: 4px 0 0; padding-left: 18px; color: var(--ink-2); font-size: 15px; display: grid; gap: 4px; }
.feature .tag { font: 600 12px/1 var(--mono); color: var(--ember-text); letter-spacing: 0.04em; }

/* FIRE types: a ruler of spending levels */
.fire-band { background: var(--card); border-block: 1px solid var(--line); }
.fire-types { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.fire-type { padding: 22px 18px; display: grid; gap: 8px; align-content: start; border-left: 1px solid var(--line); }
.fire-type:first-child { border-left: 0; }
.fire-type b { font: 700 19px/1.1 var(--display); }
.fire-type .rule { font: 500 13px/1.3 var(--mono); color: var(--ember-text); }
.fire-type p { color: var(--ink-2); font-size: 15px; }
.facts { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-top: 28px; color: var(--ink-2); font-size: 15px; }
.facts span b { color: var(--ink); font-family: var(--mono); font-weight: 600; }

/* Privacy */
.privacy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.privacy-grid > * { min-width: 0; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.checks li { display: grid; grid-template-columns: 26px 1fr; gap: 12px; }
.checks li::before { content: ''; width: 22px; height: 22px; border-radius: 50%; margin-top: 2px; background: var(--good) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12.5l4 4 8-9' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat; }
.checks b { display: block; }
.checks span { color: var(--ink-2); font-size: 16px; }

/* Pricing */
.price { background: var(--night); color: var(--on-night); border-radius: 24px; padding: 44px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center; }
.price > * { min-width: 0; }
.price h2 { font-size: clamp(28px, 4vw, 40px); color: var(--on-night); }
.price p { color: var(--on-night-2); margin-top: 12px; }
.price ul { margin: 0; padding-left: 18px; color: var(--on-night-2); display: grid; gap: 6px; }

/* FAQ */
.faq { display: grid; gap: 10px; max-width: 760px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::after { content: '+'; color: var(--ember-text); font-weight: 700; }
.faq details[open] summary::after { content: '−'; }
.faq details p { color: var(--ink-2); margin-top: 10px; }

/* Footer */
footer { border-top: 1px solid var(--line); padding-block: 36px 48px; color: var(--ink-2); font-size: 14px; }
.foot { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; }
.foot nav { display: flex; gap: 20px; flex-wrap: wrap; }
.foot a { color: var(--ink-2); }
.disclaimer { margin-top: 18px; max-width: 60em; font-size: 13px; }

/* Document pages (privacy, support) */
.doc { padding-block: 56px 80px; }
.doc-head { display: grid; gap: 12px; margin-bottom: 36px; max-width: 46em; }
.doc-head h1 { font-size: clamp(34px, 5vw, 52px); }
.doc-head p { color: var(--ink-2); }
.doc-body { max-width: 46em; display: grid; gap: 28px; }
.doc-body h2 { font-size: 22px; margin-bottom: 8px; }
.doc-body p, .doc-body li { color: var(--ink-2); }
.doc-body ol, .doc-body ul { margin: 8px 0 0; padding-left: 20px; display: grid; gap: 6px; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; }
.toc a { font-size: 14px; text-decoration: none; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; color: var(--ink); }
.contact { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; display: grid; gap: 12px; }
.email-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.email { font: 600 18px var(--mono); user-select: all; word-break: break-all; }
.btn-ghost { background: transparent; border: 1.5px solid var(--ember-text); color: var(--ember-text); padding: 9px 14px; font-size: 14px; }
.btn-solid { background: var(--ember); color: #fff; }

@media (max-width: 900px) {
  .hero, .privacy-grid, .price { grid-template-columns: 1fr; }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fire-types { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fire-type { border-left: 0; border-top: 1px solid var(--line); }
  .fire-type:nth-child(-n + 2) { border-top: 0; }
  .fire-type:nth-child(even) { border-left: 1px solid var(--line); }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .features { grid-template-columns: 1fr; }
  .fire-types { grid-template-columns: 1fr; }
  .fire-type, .fire-type:nth-child(even) { border-left: 0; }
  .fire-type:nth-child(2) { border-top: 1px solid var(--line); }
  .price { padding: 28px 22px; }
  section { padding-block: 60px; }
  .nav-links { margin-left: 0; width: 100%; }
}

/* Planning section */
.hero-sub { font: 600 22px/1.3 var(--display); color: var(--amber); margin-top: 14px; }
.features-band { background: var(--card); border-block: 1px solid var(--line); }
.features-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.plan-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.plan-grid > * { min-width: 0; }
.plan-card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 30px; display: grid; gap: 14px; align-content: start; }
.plan-card h3 { font-size: 26px; }
.plan-card > p { color: var(--ink-2); }
.plan-card .tag { font: 600 12px/1 var(--mono); color: var(--ember-text); letter-spacing: 0.04em; }
.roadmap { list-style: none; margin: 6px 0 0; padding: 0; display: grid; gap: 0; counter-reset: step; }
.roadmap li { counter-increment: step; display: grid; grid-template-columns: 34px 1fr; column-gap: 12px; padding-block: 10px; border-top: 1px solid var(--line); }
.roadmap li::before { content: counter(step); grid-row: span 2; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font: 600 13px/1 var(--mono); color: var(--ember-text); border: 1.5px solid var(--ember-text); }
.roadmap li:last-child::before { background: var(--ember); border-color: var(--ember); color: #fff; }
.roadmap b { font-weight: 600; }
.roadmap span { color: var(--ink-2); font-size: 15px; }
.plan-points { margin: 4px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.plan-points li { padding-left: 26px; position: relative; color: var(--ink); }
.plan-points li::before { content: ''; position: absolute; left: 0; top: 0.55em; width: 14px; height: 3px; border-radius: 2px; background: linear-gradient(90deg, var(--ember), var(--amber)); }
.features-band + .fire-band { border-top: 0; }
@media (max-width: 900px) { .plan-grid { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .features-4 { grid-template-columns: 1fr; } .plan-card { padding: 22px; } }
.compare { margin-top: 8px; border-radius: 14px; padding: 18px; background: var(--paper); border: 1px solid var(--line); display: grid; gap: 12px; }
.compare-head { display: flex; justify-content: space-between; align-items: baseline; }
.compare-head span, .compare p { color: var(--ink-2); font-size: 13px; }
.compare-row { display: grid; grid-template-columns: 96px 1fr 44px; gap: 12px; align-items: center; font-size: 15px; }
.compare-row b { text-align: right; }
.bar { height: 10px; border-radius: 999px; background: var(--line); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--ember), var(--amber)); }

/* Pricing tiers */
.tiers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; align-items: start; }
.tier-card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 26px; display: grid; gap: 12px; }
.tier-card h3 { font-size: 24px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.tier-price { color: var(--ink-2); }
.tier-price b { font-size: 34px; color: var(--ink); }
.tier-price span { display: block; font-size: 14px; }
.tier-card ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; color: var(--ink-2); }
.tier-best { background: var(--night); border-color: var(--night); color: var(--on-night); box-shadow: 0 24px 60px -30px rgba(232, 80, 28, 0.55); }
.tier-best h3, .tier-best .tier-price b { color: var(--on-night); }
.tier-best .tier-price, .tier-best ul { color: var(--on-night-2); }
.tier-badge { font: 600 12px/1 var(--body); color: var(--night); background: var(--amber); border-radius: 999px; padding: 5px 9px; }
@media (max-width: 900px) { .tiers { grid-template-columns: 1fr; } }

/* Plan comparison table */
.compare-table-wrap { margin-top: 28px; overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; background: var(--card); }
.compare-table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: 15px; }
.compare-table caption { text-align: left; padding: 20px 20px 8px; font: 700 20px/1.2 var(--display); color: var(--ink); }
.compare-table th, .compare-table td { padding: 12px 16px; border-top: 1px solid var(--line); text-align: center; vertical-align: middle; }
.compare-table thead th { border-top: 0; font: 700 16px/1.2 var(--display); color: var(--ink); }
.compare-table tbody th { text-align: left; font-weight: 500; color: var(--ink); width: 40%; }
.compare-table td { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.compare-table .col-best { background: color-mix(in srgb, var(--ember) 7%, transparent); }
.compare-table thead .col-best { color: var(--ember-text); }
.compare-table .yes { color: var(--good); font-weight: 700; font-size: 18px; }
.compare-table .no { color: var(--line); font-weight: 700; }
.compare-table .sub { font-size: 12.5px; color: var(--ink-2); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }