/* MithAI Labs — brand tokens taken from the logo SVGs */
:root {
  --ink: #0F1A24;
  --slate: #5C6B7A;
  --mist: #98A3AF;
  --teal: #0F6E67;
  --amber: #B0620E;

  --bg: #FFFFFF;
  --bg-alt: #F4F6F8;
  --text: var(--ink);
  --text-muted: #4A5866;
  --border: #E1E6EB;
  --accent: var(--teal);
  --accent-contrast: #FFFFFF;

  /* logo parts */
  --logo-light: var(--mist);
  --logo-mid: var(--slate);
  --logo-ink: var(--ink);
  --logo-accent: var(--teal);

  --radius: 10px;
  --container: 1120px;
  --font: Archivo, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B131B;
    --bg-alt: #111C26;
    --text: #EEF2F5;
    --text-muted: #A8B4BF;
    --border: #22303D;
    --accent: #3FBFAF;
    --accent-contrast: #0B131B;

    --logo-light: #3A4653;
    --logo-mid: #6E8090;
    --logo-ink: #FFFFFF;
    --logo-accent: #3FBFAF;
  }
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent); }

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.5em; font-weight: 600; }
h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); max-width: 22ch; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -999px; top: 8px;
  background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 6px; z-index: 100;
}
.skip-link:focus { left: 8px; }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.8em 1.4em;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--accent);
  transition: transform .15s ease, opacity .15s ease;
}
.btn:hover { transform: translateY(-1px); opacity: .92; }
.btn-small { padding: 0.5em 1.1em; font-size: .95rem; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-light { background: #fff; color: var(--ink); border-color: #fff; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: block; }
.logo { height: 36px; width: auto; }
.logo-bar-light { fill: var(--logo-light); }
.logo-bar-mid { fill: var(--logo-mid); }
.logo-bar-ink { fill: var(--logo-ink); }
.logo-bar-accent { fill: var(--logo-accent); }
.logo-text { font-family: var(--font); font-size: 56px; font-weight: 600; letter-spacing: -1.5px; fill: var(--logo-ink); }
.logo-accent { fill: var(--logo-accent); }

.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a:not(.btn) { color: var(--text); text-decoration: none; font-weight: 500; }
.site-nav a:not(.btn):hover { color: var(--accent); }

.nav-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: transform .2s ease; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: clamp(72px, 12vw, 140px) 0 clamp(64px, 10vw, 120px); }
.hero-inner { position: relative; z-index: 1; }
.hero h1 { max-width: 16ch; }
.accent { color: var(--accent); }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .8rem; font-weight: 600; color: var(--amber); margin-bottom: 1em; }
.lede { font-size: clamp(1.05rem, 1.8vw, 1.25rem); color: var(--text-muted); max-width: 58ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2em; }

/* Echo of the logo's rising bars */
.hero-bars {
  position: absolute; right: max(24px, calc((100vw - var(--container)) / 2 + 24px)); bottom: 0;
  display: flex; align-items: flex-end; gap: 14px; height: 70%; opacity: .14;
}
.hero-bars span { width: 34px; background: var(--logo-ink); border-radius: 3px 3px 0 0; animation: rise 1s cubic-bezier(.2,.7,.2,1) both; }
.hero-bars span:nth-child(1) { height: 30%; background: var(--logo-light); animation-delay: .05s; }
.hero-bars span:nth-child(2) { height: 45%; background: var(--logo-mid); animation-delay: .12s; }
.hero-bars span:nth-child(3) { height: 55%; animation-delay: .19s; }
.hero-bars span:nth-child(4) { height: 78%; animation-delay: .26s; }
.hero-bars span:nth-child(5) { height: 100%; background: var(--logo-accent); animation-delay: .33s; }
@keyframes rise { from { transform: scaleY(0); transform-origin: bottom; } to { transform: scaleY(1); transform-origin: bottom; } }

/* ---------- Sections ---------- */
.section { padding: clamp(64px, 9vw, 112px) 0; }
.section-alt { background: var(--bg-alt); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card p { color: var(--text-muted); margin: 0; }
.card-index { font-weight: 600; color: var(--accent); margin-bottom: 18px; font-size: .9rem; }

.steps { list-style: none; padding: 0; margin: 40px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; counter-reset: step; }
.steps li { counter-increment: step; border-top: 3px solid var(--border); padding-top: 20px; }
.steps li:last-child { border-top-color: var(--accent); }
.steps li::before { content: counter(step, decimal-leading-zero); display: block; font-weight: 600; color: var(--slate); font-size: .9rem; margin-bottom: 10px; }
.steps p { color: var(--text-muted); margin: 0; }

.about { display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; align-items: start; }
.about-copy p { color: var(--text-muted); font-size: 1.1rem; }

.cta { background: var(--ink); color: #fff; text-align: center; }
.cta-inner { display: flex; flex-direction: column; align-items: center; }
.cta h2 { margin-left: auto; margin-right: auto; }
.cta p { color: #B8C3CD; margin-bottom: 1.8em; }

/* Embedded Google Form (renders its own white UI, so give it a white panel) */
.form-frame {
  width: 100%; max-width: 720px;
  background: #fff; border-radius: var(--radius);
  padding: 12px 0 0; overflow: hidden;
}
.form-frame iframe { display: block; width: 100%; border: 0; }
.cta .cta-alt { margin: 1.5em 0 0; font-size: .95rem; }
.cta-alt a { color: #fff; font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 32px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-inner p { margin: 0; color: var(--text-muted); font-size: .9rem; }
.footer-logo { height: 40px; width: auto; }
.logo-dark { display: none; }
@media (prefers-color-scheme: dark) {
  .hero-bars { opacity: .3; }
  .logo-light { display: none; }
  .logo-dark { display: block; }
}

/* ---------- 404 ---------- */
.not-found { min-height: 100vh; display: flex; align-items: center; text-align: center; }
.not-found .container { display: flex; flex-direction: column; align-items: center; }
.not-found h1 { font-size: clamp(4rem, 14vw, 8rem); margin: .4em 0 .1em; color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .about { grid-template-columns: 1fr; gap: 8px; }
  .hero-bars { display: none; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .logo { height: 30px; }
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    padding: 8px 16px 20px; display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 12px 0; width: 100%; }
  .site-nav .btn { margin-top: 8px; }
  .steps { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}