/* =========================================================
   Tom Tijerina — hire-me landing page
   Pure static, no build step, no external dependencies.
   Mobile-first, responsive, prefers-color-scheme aware.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --maxw: 72rem;
  --maxw-narrow: 46rem;
  --radius: 14px;
  --radius-sm: 9px;

  /* Light theme (default) */
  --bg: #f8fafc;
  --bg-alt: #eef2f7;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #d8e0ea;
  --accent: #0f766e;         /* teal — restrained, professional */
  --accent-strong: #0b5b54;
  --accent-contrast: #ffffff;
  --focus: #0ea5e9;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --bg-alt: #0f172a;
    --surface: #131c30;
    --text: #e8eef7;
    --text-muted: #9fb0c6;
    --border: #24304a;
    --accent: #2dd4bf;
    --accent-strong: #5eead4;
    --accent-contrast: #04211d;
    --focus: #38bdf8;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .35);
  }
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0; }

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

img, svg { max-width: 100%; height: auto; display: block; }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: .6rem 1rem;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1.15rem, 4vw, 2.5rem);
}
.container--narrow { max-width: var(--maxw-narrow); }

.section { padding-block: clamp(3rem, 8vw, 5.5rem); }
.section--alt { background: var(--bg-alt); }

.section__title {
  font-size: clamp(1.5rem, 1.2rem + 1.4vw, 2rem);
  margin-bottom: 1.5rem;
}

.prose { color: var(--text-muted); max-width: 62ch; margin: 0 0 1.1rem; }
.prose--center { margin-inline: auto; text-align: center; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: .75rem clamp(1.15rem, 4vw, 2.5rem);
}
.nav__brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .05em;
  color: var(--text);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .3rem .55rem;
}
.nav__brand:hover { text-decoration: none; border-color: var(--accent); }

/* Round mini-avatar brand mark, recurring in the header on every page */
.nav__brand-group { display: flex; align-items: center; gap: .6rem; }
.brand-avatar-link { display: inline-flex; border-radius: 50%; line-height: 0; }
.brand-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--border);
  box-shadow: var(--shadow);
  transition: border-color .12s ease;
}
.brand-avatar-link:hover .brand-avatar { border-color: var(--accent); }

.nav__links {
  display: flex;
  gap: clamp(.9rem, 3vw, 1.8rem);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__links a { color: var(--text-muted); font-size: .95rem; }
.nav__links a:hover { color: var(--text); }

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(3.5rem, 10vw, 7rem);
  background:
    radial-gradient(60rem 30rem at 15% -10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%),
    radial-gradient(50rem 30rem at 110% 10%, color-mix(in srgb, var(--focus) 12%, transparent), transparent 55%);
}
.hero__eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .8rem;
  color: var(--accent);
  margin: 0 0 .9rem;
}
.hero__title {
  font-size: clamp(2.5rem, 1.8rem + 4vw, 4.5rem);
  margin-bottom: 1.1rem;
}
.hero__lede {
  font-size: clamp(1.1rem, 1rem + 0.6vw, 1.4rem);
  color: var(--text-muted);
  max-width: 40ch;
  margin: 0 0 2rem;
}

/* Hero portrait layout */
.hero__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 46rem) {
  .hero__grid { grid-template-columns: 1.3fr 0.9fr; }
}
.hero__portrait { margin: 0; justify-self: center; }
.hero__portrait img {
  width: 100%;
  max-width: 20rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* ---------- Buttons ---------- */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}
.cta-row--center { justify-content: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .7rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  color: var(--text);
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  transition: transform .12s ease, border-color .12s ease, background .12s ease;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
  border-color: var(--accent);
}
.btn--primary {
  color: var(--accent-contrast);
  background: var(--accent);
  border-color: var(--accent);
}
.btn--primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }

/* ---------- Cards ---------- */
.cards {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 46rem) {
  .cards { grid-template-columns: repeat(2, 1fr); }
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.card__title { font-size: 1.35rem; margin-bottom: .35rem; }
.card__tag {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .02em;
  color: var(--accent);
  margin: 0 0 .9rem;
}
.card__body { color: var(--text-muted); margin: 0 0 1.2rem; }
.card__links {
  margin: auto 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: .95rem;
}
.card__links a[aria-disabled="true"] {
  color: var(--text-muted);
  font-style: italic;
  cursor: not-allowed;
  pointer-events: none;
}

/* ---------- Video ---------- */
.video-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 46rem) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
}
.video { margin: 0; }
.video__frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--bg-alt);
}
.video__frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.video__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: .95rem;
  background:
    repeating-linear-gradient(
      45deg,
      color-mix(in srgb, var(--border) 40%, transparent) 0 10px,
      transparent 10px 20px);
}
.video__caption {
  margin-top: .6rem;
  font-size: .9rem;
  color: var(--text-muted);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2.5rem;
  background: var(--bg);
}
.site-footer__name { font-weight: 700; margin: 0 0 .75rem; }
.site-footer__links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding: 0;
  margin: 0 0 1rem;
}
.site-footer__note { color: var(--text-muted); font-size: .9rem; margin: 0; }