/* tinyblue.dev — landing
   Apple-inspired, single-page, vanilla. Nick Wharton's developer domain.
   Stylesheet is self-contained; no resets imported, no frameworks.
*/

:root {
  /* Type */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code",
    Menlo, Monaco, Consolas, monospace;

  /* Palette — restrained, Apple-style off-white + near-black + one accent */
  --bg: #fbfbfd;
  --bg-elev: #ffffff;
  --bg-tint: #f5f5f7;
  --ink: #1d1d1f;
  --ink-soft: #424245;
  --ink-mute: #6e6e73;
  --ink-faint: #86868b;
  --rule: rgba(0, 0, 0, 0.08);
  --rule-strong: rgba(0, 0, 0, 0.14);

  /* tinyblue accent — deep, considered, not generic SaaS */
  --tb-blue: #1f4e8a;
  --tb-blue-hover: #1a4276;
  --tb-blue-soft: rgba(31, 78, 138, 0.08);
  --tb-blue-ring: rgba(31, 78, 138, 0.25);

  /* Shadows — long, soft */
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 14px rgba(0, 0, 0, 0.04);
  --shadow-2: 0 2px 6px rgba(0, 0, 0, 0.06), 0 18px 48px rgba(0, 0, 0, 0.08);

  /* Geometry */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 22px;
  --maxw: 1120px;
  --gutter: clamp(20px, 4vw, 48px);

  /* Motion */
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
}

/* Dark — explicit data-theme attribute (manual toggle) wins. */
:root[data-theme="dark"] {
  --bg: #000000;
  --bg-elev: #0b0b0d;
  --bg-tint: #131316;
  --ink: #f5f5f7;
  --ink-soft: #d2d2d7;
  --ink-mute: #a1a1a6;
  --ink-faint: #6e6e73;
  --rule: rgba(255, 255, 255, 0.10);
  --rule-strong: rgba(255, 255, 255, 0.18);
  --tb-blue: #6ea0e8;
  --tb-blue-hover: #94baef;
  --tb-blue-soft: rgba(110, 160, 232, 0.12);
  --tb-blue-ring: rgba(110, 160, 232, 0.32);
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.5), 0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 2px 6px rgba(0, 0, 0, 0.55), 0 18px 48px rgba(0, 0, 0, 0.55);
}

/* Dark — follow OS when no explicit choice. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000;
    --bg-elev: #0b0b0d;
    --bg-tint: #131316;
    --ink: #f5f5f7;
    --ink-soft: #d2d2d7;
    --ink-mute: #a1a1a6;
    --ink-faint: #6e6e73;
    --rule: rgba(255, 255, 255, 0.10);
    --rule-strong: rgba(255, 255, 255, 0.18);
    --tb-blue: #6ea0e8;
    --tb-blue-hover: #94baef;
    --tb-blue-soft: rgba(110, 160, 232, 0.12);
    --tb-blue-ring: rgba(110, 160, 232, 0.32);
    --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.5), 0 4px 14px rgba(0, 0, 0, 0.4);
    --shadow-2: 0 2px 6px rgba(0, 0, 0, 0.55), 0 18px 48px rgba(0, 0, 0, 0.55);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.5;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--tb-blue);
  text-decoration: none;
  transition: color 160ms var(--ease);
}
a:hover { color: var(--tb-blue-hover); }
a:focus-visible {
  outline: 2px solid var(--tb-blue-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--tb-blue-soft); color: var(--ink); }

/* ────────── Nav ────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--rule);
}

.nav__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  font-size: 15px;
}
.nav__brand:hover { color: var(--ink); }

.nav__mark {
  width: 22px; height: 22px;
  display: inline-block;
  border-radius: 5px;
  background: var(--tb-blue);
  position: relative;
  flex: 0 0 auto;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.18);
}
.nav__mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1.5px solid rgba(255,255,255,0.92);
  border-radius: 2px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  color: var(--ink-mute);
}
.nav__links a {
  color: var(--ink-mute);
  font-weight: 400;
}
.nav__links a:hover { color: var(--ink); }

/* Right-side action cluster — theme toggle + hamburger always together. */
.nav__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* Hamburger button — only visible on mobile, replaces the inline nav links. */
.nav__menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 12px;
  color: var(--ink);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.nav__menu-btn svg { width: 20px; height: 20px; }
.nav__menu-btn:hover { background: var(--bg-tint); }

/* Mobile drawer — slides down from below the nav. */
.nav-drawer {
  position: fixed;
  top: 64px;
  left: 12px;
  right: 12px;
  z-index: 49;
  background: rgba(20, 20, 24, 0.96);
  border: 1px solid var(--rule);
  border-radius: 16px;
  padding: 8px;
  display: flex !important;
  flex-direction: column;
  gap: 2px;
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity .2s ease, transform .2s ease;
  pointer-events: none;
}
html[data-theme="light"] .nav-drawer {
  background: rgba(255, 255, 255, 0.96);
}
@media (prefers-color-scheme: light) {
  html:not([data-theme="dark"]) .nav-drawer { background: rgba(255, 255, 255, 0.96); }
}
.nav-drawer[hidden] { display: none !important; }
.nav-drawer.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.nav-drawer__item {
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.nav-drawer__item:hover { background: var(--bg-tint); }
.nav-drawer__item--cta {
  margin-top: 4px;
  border-top: 1px solid var(--rule);
  padding-top: 14px;
  color: var(--accent, #2997ff);
}

/* Below 980px hide the inline secondary links to reduce clutter, but keep
   Projects, Contact, and the theme toggle on the bar. */
@media (max-width: 980px) {
  .nav__links .nav__link--secondary { display: none; }
}
/* Below 640px the inline nav collapses entirely to brand + theme + hamburger.
   The hamburger opens a drawer with all 8 page links. */
@media (max-width: 640px) {
  .nav__links a { display: none; }
  .nav__menu-btn { display: inline-flex; }
}
/* Auth-widget pill (#tba-btn from auth-widget.js) is the AUTH WIDGET'S OWN
   FLOATING PILL — useful on cross-fleet sites but redundant on tinyblue.dev
   itself (this IS the auth widget's home). Hide it here so it doesn't
   compete with the page's own nav. */
#tba-btn { display: none !important; }

/* ────────── Layout ────────── */

main { display: block; }

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(72px, 12vw, 140px) var(--gutter);
}
.section--tight { padding-top: clamp(32px, 6vw, 64px); padding-bottom: clamp(32px, 6vw, 64px); }
.section--alt { background: var(--bg-tint); max-width: none; }
.section--alt > .section__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(72px, 12vw, 140px) var(--gutter);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tb-blue);
  padding: 4px 10px;
  border: 1px solid var(--tb-blue-ring);
  border-radius: 999px;
  background: var(--tb-blue-soft);
  margin-bottom: 22px;
}

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 0 0 0.4em;
}

h2 {
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1.06;
}

h3 {
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

.lede {
  color: var(--ink-soft);
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.45;
  max-width: 62ch;
  margin: 0 0 32px;
  font-weight: 400;
  letter-spacing: -0.012em;
}

/* ────────── Hero ────────── */

.hero {
  position: relative;
  padding-top: clamp(80px, 14vw, 160px);
  padding-bottom: clamp(72px, 12vw, 140px);
  text-align: left;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60% 60% at 85% 20%,
      color-mix(in srgb, var(--tb-blue) 18%, transparent) 0%,
      transparent 70%);
  opacity: 0.85;
  filter: blur(1px);
}

.hero__title {
  font-size: clamp(48px, 8vw, 104px);
  line-height: 0.98;
  letter-spacing: -0.04em;
  font-weight: 600;
  margin: 0 0 24px;
}

.hero__title .accent {
  color: var(--tb-blue);
}

.hero__sub {
  font-size: clamp(20px, 2.1vw, 28px);
  color: var(--ink-soft);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.015em;
  max-width: 56ch;
  margin: 0 0 40px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
  margin-bottom: 44px;
}
.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero__meta span::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tb-blue);
  opacity: 0.8;
  display: inline-block;
}

.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: transform 180ms var(--ease), background 180ms var(--ease),
              color 180ms var(--ease), border-color 180ms var(--ease),
              box-shadow 180ms var(--ease);
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1;
}
.btn--primary {
  background: var(--tb-blue);
  color: #fff;
}
.btn--primary:hover {
  background: var(--tb-blue-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-1);
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule-strong);
}
.btn--ghost:hover {
  background: var(--bg-tint);
  color: var(--ink);
  transform: translateY(-1px);
}
.btn .arrow {
  transition: transform 200ms var(--ease);
  display: inline-block;
}
.btn:hover .arrow { transform: translateX(3px); }

/* ────────── Stat strip ────────── */

.stat-strip {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--bg-elev);
}
.stat-strip__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 32px var(--gutter);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat__value {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1;
  color: var(--ink);
}
.stat__value .unit {
  color: var(--ink-mute);
  font-weight: 400;
  margin-left: 4px;
  font-size: 0.6em;
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
@media (max-width: 720px) {
  .stat-strip__inner { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

/* ────────── Cards ────────── */

.section__head {
  max-width: 64ch;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 980px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .cards { grid-template-columns: 1fr; } }

.card {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 32px 28px 28px;
  transition: transform 260ms var(--ease), box-shadow 260ms var(--ease),
              border-color 260ms var(--ease);
  overflow: hidden;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  border-color: var(--rule-strong);
}
.card__icon {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  background: var(--tb-blue-soft);
  color: var(--tb-blue);
  margin-bottom: 20px;
}
.card__icon svg { width: 18px; height: 18px; }
.card h3 { margin-bottom: 10px; }
.card p {
  color: var(--ink-mute);
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.5;
}
.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.card__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--bg-tint);
  color: var(--ink-mute);
  border: 1px solid var(--rule);
}

/* ────────── Stack list ────────── */

.stack {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.stack__item {
  background: var(--bg);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.stack__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.stack__value {
  font-size: 15px;
  color: var(--ink);
  letter-spacing: -0.01em;
  font-weight: 500;
}
@media (max-width: 880px) { .stack { grid-template-columns: repeat(2, 1fr); } }

/* ────────── Terminal block ────────── */

.terminal-wrap {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
@media (max-width: 880px) {
  .terminal-wrap { grid-template-columns: 1fr; }
}

.terminal {
  background: #0b0b0d;
  color: #e8e8ec;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  box-shadow: var(--shadow-2);
  border: 1px solid rgba(255,255,255,0.06);
  overflow: hidden;
}
.terminal__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: #18181b;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.terminal__dot {
  width: 11px; height: 11px;
  border-radius: 50%;
  background: #3a3a3f;
}
.terminal__dot:nth-child(1) { background: #ff5f57; }
.terminal__dot:nth-child(2) { background: #febc2e; }
.terminal__dot:nth-child(3) { background: #28c840; }
.terminal__title {
  margin-left: auto;
  font-size: 11.5px;
  color: #8e8e93;
  letter-spacing: 0.04em;
}
.terminal__body {
  padding: 18px 20px;
  white-space: pre;
  overflow-x: auto;
}
.term-prompt { color: #6ea0e8; }
.term-cmd { color: #f5f5f7; }
.term-out { color: #a1a1a6; }
.term-ok { color: #57d28a; }
.term-warn { color: #ffd07b; }
.term-key { color: #b39df3; }
.term-comment { color: #6e6e73; font-style: italic; }
.cursor {
  display: inline-block;
  width: 8px; height: 1.05em;
  vertical-align: -0.18em;
  background: #e8e8ec;
  animation: blink 1.05s steps(1) infinite;
  margin-left: 2px;
}
@keyframes blink { 50% { opacity: 0; } }

/* ────────── Footer ────────── */

.footer {
  border-top: 1px solid var(--rule);
  background: var(--bg);
}
.footer__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 36px var(--gutter) 48px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  font-size: 13px;
  color: var(--ink-mute);
}
.footer__links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.footer__links a { color: var(--ink-mute); }
.footer__links a:hover { color: var(--ink); }

/* ────────── Motion: scroll fade-in ────────── */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .cursor { animation: none; }
}

/* Codex Apple pass: parent-site viewport law and phone ergonomics */
html,
body {
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
}

main,
section,
.nav__inner,
.nav-drawer,
.hero,
.cards,
.card,
.stat-strip__inner,
.terminal-wrap,
.terminal,
.stack {
  min-width: 0;
}

.nav a,
.nav button,
.btn,
.nav-drawer__item,
button {
  min-height: 44px;
}

.nav button,
.btn {
  min-width: 44px;
}

.terminal__body,
.term-out,
.term-cmd,
.term-comment {
  overflow-wrap: anywhere;
}

@media (max-width: 640px) {
  .nav__inner {
    padding-inline: 18px;
  }
  .nav__brand {
    min-width: 0;
    max-width: 56vw;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .hero {
    padding-top: 78px;
    padding-bottom: 72px;
  }
  .hero__title {
    font-size: clamp(52px, 14vw, 70px);
    line-height: 1.02;
    letter-spacing: -0.045em;
  }
  .hero__sub {
    font-size: 21px;
    line-height: 1.36;
  }
  .cta-row {
    gap: 12px;
  }
  .btn {
    min-height: 52px;
    padding-inline: 24px;
    font-size: 17px;
  }
}