/* Nexora AI — design tokens and base styles */
:root {
  --chalk: #f4f6fa;
  --paper: #ffffff;
  --ink: #0b1326;
  --ink-2: #4a5470;
  --line: #d9dfea;
  --cobalt: #2b4bff;
  --cobalt-deep: #1c34c7;
  --mint: #c6f3dd;
  --spark: #ff6a3d;
  --danger: #b42318;
  --ok: #067647;
  --radius: 10px;
  --font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Avenir Next", "Segoe UI Variable Display", "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  --wrap: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --chalk: #0a0f1e; --paper: #111830; --ink: #eaf0ff; --ink-2: #a3aecb; --line: #243056;
    --cobalt: #6f86ff; --cobalt-deep: #92a3ff; --mint: #14412f;
  }
}
:root[data-theme="dark"] {
  --chalk: #0a0f1e; --paper: #111830; --ink: #eaf0ff; --ink-2: #a3aecb; --line: #243056;
  --cobalt: #6f86ff; --cobalt-deep: #92a3ff; --mint: #14412f;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--chalk); color: var(--ink); font: 17px/1.6 var(--font-body); -webkit-font-smoothing: antialiased; }
img, svg { max-width: 100%; display: block; }
a { color: var(--cobalt-deep); text-underline-offset: 3px; }
a:hover { color: var(--cobalt); }
:focus-visible { outline: 3px solid var(--cobalt); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--chalk); padding: 8px 14px; border-radius: 6px; z-index: 100; }
.skip:focus { left: 8px; }
.wrap { width: min(var(--wrap), 100% - 40px); margin-inline: auto; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 .5em; font-weight: 750; }
h1 { font-size: clamp(2.3rem, 5.4vw, 4rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); }
h3 { font-size: 1.15rem; letter-spacing: -0.01em; }
p { margin: 0 0 1em; max-width: 68ch; }
.lead { font-size: 1.2rem; color: var(--ink-2); max-width: 54ch; }
.muted { color: var(--ink-2); }
.small { font-size: .9rem; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--chalk) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; gap: 28px; min-height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font: 750 1.3rem var(--font-display); letter-spacing: -0.03em; }
.brand img { width: 34px; height: 34px; }
.brand span { color: var(--cobalt-deep); font-weight: 650; }
.nav { display: flex; gap: 22px; margin-left: 8px; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 550; font-size: .98rem; padding: 6px 2px; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--cobalt); }
.bar-end { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.btn.menu-btn { display: none; }

/* Buttons and inputs */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 650 .98rem var(--font-body); padding: 11px 20px; border-radius: 999px; border: 1.5px solid var(--cobalt); background: var(--cobalt); color: #fff; text-decoration: none; cursor: pointer; transition: background .15s, transform .15s, border-color .15s; }
.btn:hover { background: var(--cobalt-deep); border-color: var(--cobalt-deep); color: #fff; }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--paper); color: var(--ink); border-color: var(--ink-2); }
.btn-sm { padding: 7px 15px; font-size: .9rem; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
label { display: block; font-weight: 600; font-size: .94rem; margin: 0 0 6px; }
input, select, textarea { width: 100%; font: inherit; color: var(--ink); background: var(--paper); border: 1.5px solid var(--line); border-radius: var(--radius); padding: 11px 13px; }
textarea { resize: vertical; min-height: 110px; line-height: 1.5; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--cobalt); box-shadow: 0 0 0 3px color-mix(in srgb, var(--cobalt) 22%, transparent); }
.field { margin-bottom: 18px; }
.hint { font-size: .86rem; color: var(--ink-2); margin-top: 5px; }
.err-text { color: var(--danger); font-size: .9rem; margin-top: 6px; }

/* Hero */
.hero { padding: clamp(44px, 8vw, 96px) 0 clamp(40px, 6vw, 72px); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.hero h1 { max-width: 12ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-note { margin-top: 18px; font-size: .92rem; color: var(--ink-2); }

.demo { background: var(--paper); border: 1.5px solid var(--ink); border-radius: 14px; box-shadow: 8px 8px 0 var(--cobalt); overflow: hidden; }
.demo-head { display: flex; justify-content: space-between; align-items: center; padding: 11px 16px; border-bottom: 1.5px solid var(--line); font-weight: 650; font-size: .93rem; }
.demo-body { padding: 16px; display: grid; gap: 12px; }
.demo textarea { min-height: 128px; }
.demo-row { display: flex; gap: 10px; flex-wrap: wrap; }
.demo-row select { flex: 1 1 140px; width: auto; }
.demo-out { background: var(--chalk); border: 1.5px dashed var(--line); border-radius: var(--radius); padding: 13px 14px; min-height: 84px; white-space: pre-wrap; }
.demo-out.is-filled { border-style: solid; border-color: var(--cobalt); background: color-mix(in srgb, var(--mint) 45%, var(--paper)); }

/* Sections */
.section { padding: clamp(44px, 7vw, 84px) 0; }
.section-tight { padding: clamp(28px, 4vw, 48px) 0; }
.section-alt { background: var(--paper); border-block: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; flex-wrap: wrap; margin-bottom: 28px; }
.section-head h2 { margin: 0; }

/* Tool index: a ruled list, not a card grid */
.tool-list { list-style: none; margin: 0; padding: 0; border-top: 1.5px solid var(--ink); }
.tool-list li { border-bottom: 1px solid var(--line); }
.tool-row { display: grid; grid-template-columns: 240px 1fr auto; gap: 24px; align-items: baseline; padding: 20px 4px; text-decoration: none; color: var(--ink); transition: background .15s, padding .15s; }
.tool-row:hover { background: var(--paper); padding-inline: 16px; color: var(--ink); }
.tool-row strong { font: 700 1.15rem var(--font-display); letter-spacing: -0.015em; }
.tool-row span.d { color: var(--ink-2); }
.tool-row .go { font-weight: 650; color: var(--cobalt-deep); white-space: nowrap; }
.tag { font-size: .78rem; font-weight: 650; background: var(--mint); color: #0b3d28; padding: 2px 9px; border-radius: 999px; margin-left: 8px; vertical-align: middle; }
:root[data-theme="dark"] .tag { color: #bff3d8; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .tag { color: #bff3d8; } }

/* Steps and columns */
.steps { counter-reset: s; display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; list-style: none; padding: 0; margin: 0; }
.steps li { counter-increment: s; padding-top: 14px; border-top: 1.5px solid var(--ink); }
.steps li::before { content: counter(s); display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--cobalt); color: #fff; font-weight: 700; font-size: .9rem; margin-bottom: 10px; }
.cols-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }

/* Pricing */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1.5px solid var(--ink); border-radius: 14px; overflow: hidden; background: var(--paper); }
.plan { padding: 30px 28px 32px; display: flex; flex-direction: column; border-right: 1px solid var(--line); }
.plan:last-child { border-right: 0; }
.plan.feature { background: var(--cobalt); color: #fff; }
.plan.feature .muted, .plan.feature li { color: #e6ebff; }
:root[data-theme="dark"] .plan.feature { background: #2b4bff; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .plan.feature { background: #2b4bff; } }
.plan h3 { font-size: 1.3rem; margin-bottom: 4px; }
.price { font: 750 2.8rem var(--font-display); letter-spacing: -0.04em; margin: 12px 0 2px; }
.price small { font: 500 1rem var(--font-body); letter-spacing: 0; opacity: .8; }
.plan ul { list-style: none; padding: 0; margin: 18px 0 26px; display: grid; gap: 9px; flex: 1; }
.plan li { padding-left: 24px; position: relative; font-size: .97rem; }
.plan li::before { content: ""; position: absolute; left: 2px; top: .55em; width: 11px; height: 6px; border-left: 2.5px solid currentColor; border-bottom: 2.5px solid currentColor; transform: rotate(-45deg); }
.plan.feature .btn { background: #fff; color: var(--cobalt-deep); border-color: #fff; }
.plan.feature .btn:hover { background: var(--mint); border-color: var(--mint); color: #0b3d28; }
.toggle { display: inline-flex; border: 1.5px solid var(--line); border-radius: 999px; padding: 3px; background: var(--paper); margin-bottom: 24px; }
.toggle button { font: 600 .92rem var(--font-body); padding: 7px 16px; border-radius: 999px; border: 0; background: transparent; color: var(--ink); cursor: pointer; }
.toggle button[aria-pressed="true"] { background: var(--ink); color: var(--chalk); }

/* Tool page */
.tool-page { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
.panel { background: var(--paper); border: 1.5px solid var(--line); border-radius: 14px; padding: 24px; }
.output { white-space: pre-wrap; background: var(--chalk); border: 1.5px dashed var(--line); border-radius: var(--radius); padding: 16px; min-height: 220px; font-size: 1rem; }
.output.is-filled { border-style: solid; border-color: var(--cobalt); background: var(--paper); }
.out-actions { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; align-items: center; }
.status { font-size: .88rem; color: var(--ink-2); }
.quota { font-size: .9rem; color: var(--ink-2); margin-top: 12px; }
.notice { border-left: 4px solid var(--cobalt); background: var(--paper); padding: 12px 16px; border-radius: 0 var(--radius) var(--radius) 0; margin: 14px 0; font-size: .95rem; }
.notice.warn { border-color: var(--spark); }

/* Blog */
.post-list { list-style: none; padding: 0; margin: 0; border-top: 1.5px solid var(--ink); }
.post-list li { border-bottom: 1px solid var(--line); }
.post-row { display: block; padding: 24px 4px; text-decoration: none; color: var(--ink); }
.post-row:hover { background: var(--paper); color: var(--ink); }
.post-row h3 { font-size: 1.4rem; margin-bottom: 6px; }
.post-row p { color: var(--ink-2); margin: 0 0 6px; }
.meta { font-size: .88rem; color: var(--ink-2); }
.prose { max-width: 700px; }
.prose p, .prose li { font-size: 1.1rem; line-height: 1.75; }
.prose h2 { margin-top: 1.6em; font-size: 1.7rem; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.2em; }
.prose blockquote { margin: 1.5em 0; padding: 4px 0 4px 20px; border-left: 4px solid var(--cobalt); color: var(--ink-2); font-size: 1.15rem; }
.ad-slot { margin: 28px 0; min-height: 0; }
.ad-slot:empty { display: none; }
.crumbs { font-size: .9rem; color: var(--ink-2); margin-bottom: 18px; }
.crumbs a { color: inherit; }

/* Auth */
.auth { max-width: 460px; margin-inline: auto; }
.tabs { display: flex; gap: 4px; border-bottom: 1.5px solid var(--line); margin-bottom: 22px; }
.tabs button { font: 650 1rem var(--font-body); padding: 10px 16px; border: 0; background: transparent; color: var(--ink-2); cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -1.5px; }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--cobalt); }
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0; }
.stat { border-top: 1.5px solid var(--ink); padding-top: 10px; }
.stat b { display: block; font: 750 1.8rem var(--font-display); letter-spacing: -0.03em; }

/* CTA band + footer */
.cta-band { background: var(--ink); color: var(--chalk); }
.cta-band .lead { color: #b8c3e0; }
.cta-band .btn { background: #fff; color: var(--ink); border-color: #fff; }
.cta-band .btn:hover { background: var(--mint); border-color: var(--mint); color: #0b3d28; }
:root[data-theme="dark"] .cta-band, .cta-band { --chalk: #f4f6fa; }
.site-footer { padding: 52px 0 36px; border-top: 1px solid var(--line); font-size: .95rem; }
.foot-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 32px; }
.foot-grid h3 { font-size: .98rem; margin-bottom: 10px; }
.foot-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 7px; }
.foot-grid a { color: var(--ink-2); text-decoration: none; }
.foot-grid a:hover { color: var(--cobalt); text-decoration: underline; }
.legal { margin-top: 34px; padding-top: 18px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; color: var(--ink-2); font-size: .88rem; }

/* Responsive */
@media (max-width: 900px) {
  .hero-grid, .tool-page, .cols-2 { grid-template-columns: 1fr; }
  .steps, .cols-3, .plans { grid-template-columns: 1fr; }
  .plan { border-right: 0; border-bottom: 1px solid var(--line); }
  .plan:last-child { border-bottom: 0; }
  .tool-row { grid-template-columns: 1fr; gap: 4px; }
  .tool-row .go { display: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { max-width: none; }
  .demo { box-shadow: 5px 5px 0 var(--cobalt); }
}
@media (max-width: 760px) {
  .btn.menu-btn { display: inline-flex; margin-left: auto; }
  .bar-end { display: none; }
  .nav { display: none; position: absolute; top: 66px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--chalk); border-bottom: 1px solid var(--line); padding: 8px 20px 18px; margin: 0; }
  .nav.open { display: flex; }
  .nav a { padding: 13px 0; border-bottom: 1px solid var(--line); }
  .nav .nav-extra { display: block; }
  .stat-row { grid-template-columns: 1fr; }
}
.nav-extra { display: none; }

/* One orchestrated moment: the hero demo lands in once, nothing else animates on load */
@keyframes land { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.demo { animation: land .6s cubic-bezier(.2,.7,.2,1) both; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .demo { animation: none; }
  * { transition: none !important; }
}