/*
 * Logfire overview -- styles.
 *
 * Palette and typography are derived from ~/pydantic/brand:
 *   - Lithium  #E520E9  primary brand accent (logomark, links, key highlights)
 *   - Calcium  #FF6550  secondary warm accent
 *   - Purple   #9B77FF  tertiary accent
 *   - Aqua     #77FFD8  dark-mode accent
 *   - Sugar    #FBFFEA  warm near-white (brand light background)
 *   - Dark Purple #36182D  brand dark background
 *   - Petroleum #092224  the website's Logfire-specific dark surface
 * The page defaults to the brand dark theme (Petroleum base, Dark Purple
 * panels). Pure black / pure white are avoided per the brand guidelines.
 *
 * Fonts:
 *   - IBM Plex Sans (brand primary sans), self-hosted from assets/fonts.
 *   - IBM Plex Mono (brand accent mono), loaded from the Google Fonts CDN as a
 *     network import; the brand folder ships only the variable Sans, so the Mono
 *     comes from the CDN. Falls back to ui-monospace if offline.
 */

@font-face {
  font-family: 'IBM Plex Sans';
  src: url('../assets/fonts/IBMPlexSans.ttf') format('truetype-variations');
  font-weight: 100 700;
  font-display: swap;
}

:root {
  /* brand palette */
  --lithium: #e520e9;
  --calcium: #ff6550;
  --purple: #9b77ff;
  --aqua: #77ffd8;
  --sugar: #fbffea;
  --dark-purple: #36182d;

  /* surfaces (dark theme, Petroleum-leaning per the website's Logfire pages) */
  --bg: #0a1416;
  --bg-2: #0e1c1f;
  --panel: #122a2a;
  --panel-2: #163233;
  --panel-raise: #1b3a3b;
  --hairline: rgba(119, 255, 216, 0.14);
  --hairline-strong: rgba(119, 255, 216, 0.28);

  /* text */
  --ink: #eef6ef;
  --ink-soft: #b9cccb;
  --ink-mute: #87a09f;

  /* accents in use */
  --accent: var(--lithium);
  --accent-2: var(--aqua);
  --accent-warm: var(--calcium);

  /* maturity */
  --ga: var(--aqua);
  --preview: var(--purple);
  --beta: var(--calcium);

  --radius: 14px;
  --radius-lg: 22px;
  --maxw: 1120px;
  --gutter: clamp(20px, 5vw, 56px);

  --font-sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', 'Menlo', monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background:
    radial-gradient(900px 600px at 82% -8%, rgba(229, 32, 233, 0.16), transparent 60%),
    radial-gradient(820px 560px at 8% 4%, rgba(119, 255, 216, 0.08), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  z-index: 100;
  border-radius: 0 0 8px 0;
}

.skip-link:focus {
  left: 0;
}

.wrap {
  width: min(100% - calc(var(--gutter) * 2), var(--maxw));
  margin-inline: auto;
}

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: -0.015em;
  font-weight: 600;
  margin: 0;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0 0 14px;
}

.lead {
  color: var(--ink-soft);
  font-size: 1.05rem;
  max-width: 62ch;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(10, 20, 22, 0.72);
  border-bottom: 1px solid var(--hairline);
}

.site-header .bar {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand img.logo {
  height: 26px;
  width: auto;
  display: block;
}

.nav {
  margin-left: auto;
  display: flex;
  gap: 22px;
  align-items: center;
}

.nav a {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.nav a:hover {
  color: var(--ink);
  text-decoration: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--hairline-strong);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  border-color: var(--accent);
  background: rgba(229, 32, 233, 0.1);
}

.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: #f53bf8;
  border-color: #f53bf8;
}

@media (max-width: 760px) {
  .nav a.nav-link {
    display: none;
  }
}

/* ---------- hero ---------- */

.hero {
  padding: clamp(56px, 9vw, 104px) 0 clamp(40px, 6vw, 72px);
}

.hero h1 {
  font-size: clamp(2.2rem, 5.4vw, 3.7rem);
  max-width: 18ch;
  margin-bottom: 22px;
}

.hero h1 .hl {
  color: var(--accent);
}

.hero .loop-story {
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.7vw, 1.18rem);
  max-width: 64ch;
  margin: 0 0 18px;
}

.hero .subhead {
  color: var(--ink-mute);
  max-width: 60ch;
  margin: 0 0 30px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.convergence-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 28px;
  padding: 10px 16px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.convergence-chip b {
  color: var(--ink);
  font-weight: 500;
}

/* ---------- section scaffolding ---------- */

.section {
  padding: clamp(48px, 8vw, 92px) 0;
  border-top: 1px solid var(--hairline);
}

.section-head {
  max-width: 70ch;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.section-head h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  margin-bottom: 14px;
}

/* ---------- the loop diagram ---------- */

.loop {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}

@media (max-width: 920px) {
  .loop {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .loop {
    grid-template-columns: 1fr;
  }
}

.loop-stage {
  position: relative;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 20px 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 184px;
}

.loop-stage.converges {
  border-color: rgba(229, 32, 233, 0.5);
  box-shadow: 0 0 0 1px rgba(229, 32, 233, 0.22), 0 18px 40px -28px rgba(229, 32, 233, 0.6);
}

.loop-stage .step-n {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
}

.loop-stage h3 {
  font-size: 1.18rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.loop-stage .product-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-2);
}

.loop-stage .what {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin: 0;
}

.loop-stage .converge-mark {
  margin-top: auto;
  font-size: 0.74rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.loop-stage .converge-mark.off {
  color: var(--ink-mute);
}

.loop-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--hairline-strong);
}

.loop-converge-note {
  margin-top: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.loop-converge-note .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(229, 32, 233, 0.18);
  flex: none;
}

/* ---------- group + capability cards ---------- */

.group {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.group:last-child {
  margin-bottom: 0;
}

.group-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.group-head h3 {
  font-size: 1.45rem;
}

.group-head .count {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-mute);
}

.group-blurb {
  color: var(--ink-soft);
  max-width: 74ch;
  margin: 0 0 24px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 18px;
}

@media (max-width: 480px) {
  .cards {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 24px 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.card:hover {
  border-color: var(--hairline-strong);
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  .card:hover {
    transform: none;
  }
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.card h4 {
  font-size: 1.16rem;
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.badges {
  display: flex;
  gap: 6px;
  flex: none;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid currentColor;
  white-space: nowrap;
}

.badge.ga {
  color: var(--ga);
}

.badge.preview {
  color: var(--preview);
}

.badge.beta {
  color: var(--beta);
}

.badge.mcp {
  color: var(--ink-mute);
}

.one-liner {
  color: var(--ink);
  font-size: 0.98rem;
  margin: 0;
  font-weight: 500;
}

.job {
  margin: 0;
  padding: 12px 14px;
  border-left: 2px solid var(--accent);
  background: rgba(229, 32, 233, 0.06);
  border-radius: 0 8px 8px 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.job .job-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 5px;
}

.card .what {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0;
}

.card code,
.what code,
.detail code,
.job code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(119, 255, 216, 0.1);
  color: var(--aqua);
  padding: 1px 5px;
  border-radius: 4px;
}

.maturity-note {
  font-size: 0.82rem;
  color: var(--ink-mute);
  margin: 0;
  display: flex;
  gap: 8px;
}

.maturity-note::before {
  content: '!';
  font-family: var(--font-mono);
  color: var(--preview);
  font-weight: 700;
  flex: none;
}

.proof {
  margin: 0;
  font-size: 0.86rem;
  color: var(--ink);
  background: var(--panel-2);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 10px 12px;
}

.proof .proof-label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-right: 7px;
}

.card-foot {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.stack-note {
  font-size: 0.82rem;
  color: var(--ink-mute);
}

.stack-note b {
  color: var(--ink-soft);
  font-weight: 500;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.card-links a {
  font-size: 0.84rem;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.card-links a::after {
  content: '\2197';
  font-size: 0.78em;
  opacity: 0.7;
}

/* ---------- build stack ---------- */

.build-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: step;
}

.build-step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 22px;
  padding: 24px 0;
  border-top: 1px solid var(--hairline);
  position: relative;
}

.build-step:first-child {
  border-top: none;
}

.build-step .num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--accent);
  font-weight: 500;
  position: relative;
}

.build-step .num::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 44px;
  bottom: -24px;
  width: 1px;
  background: var(--hairline);
}

.build-step:last-child .num::after {
  display: none;
}

.build-step h3 {
  font-size: 1.22rem;
  margin-bottom: 6px;
}

.build-step .product {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--accent-2);
  margin-bottom: 8px;
}

.build-step .detail {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0 0 12px;
  max-width: 76ch;
}

.cap-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.cap-chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  padding: 3px 9px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--panel);
}

.cap-chip:hover {
  border-color: var(--accent);
  color: var(--ink);
  text-decoration: none;
}

/* ---------- the stack ---------- */

.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
}

.stack-card {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--panel);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.18s ease;
}

.stack-card:hover {
  text-decoration: none;
  border-color: var(--hairline-strong);
}

.stack-card.is-logfire {
  border-color: rgba(229, 32, 233, 0.5);
  background: linear-gradient(180deg, rgba(229, 32, 233, 0.1), var(--panel));
}

.stack-card .short {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--accent-2);
}

.stack-card.is-logfire .short {
  color: var(--accent);
}

.stack-card h3 {
  font-size: 1.1rem;
  color: var(--ink);
}

.stack-card .role {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 0;
}

/* ---------- trace embed slot ---------- */

.trace-slot {
  border: 1px dashed var(--hairline-strong);
  border-radius: var(--radius-lg);
  background:
    repeating-linear-gradient(
      135deg,
      transparent,
      transparent 12px,
      rgba(119, 255, 216, 0.03) 12px,
      rgba(119, 255, 216, 0.03) 24px
    ),
    var(--bg-2);
  padding: clamp(36px, 6vw, 64px);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.trace-slot .trace-icon {
  width: 48px;
  height: 48px;
  color: var(--accent-2);
  opacity: 0.8;
}

.trace-slot h3 {
  font-size: 1.3rem;
}

.trace-slot p {
  color: var(--ink-mute);
  max-width: 56ch;
  margin: 0;
  font-size: 0.95rem;
}

.trace-slot .pending {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 5px 12px;
}

.trace-slot iframe {
  width: 100%;
  height: 520px;
  border: 0;
  border-radius: 12px;
}

/* ---------- llm strip ---------- */

.llm-strip {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 18px 22px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--panel);
}

.llm-strip .llm-icon {
  width: 22px;
  height: 22px;
  color: var(--accent-2);
  flex: none;
}

.llm-strip p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.llm-strip a {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.84rem;
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 44px 0 60px;
  color: var(--ink-mute);
  font-size: 0.88rem;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
  align-items: flex-start;
}

.footer-grid .links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.footer-grid a {
  color: var(--ink-soft);
}

.footer-note {
  margin-top: 26px;
  max-width: 70ch;
}

/* loading + error states */
.boot-msg {
  padding: 80px var(--gutter);
  text-align: center;
  color: var(--ink-mute);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}