/* =========================================================================
   Devbox Limited — styles.css
   Order: tokens → reset → primitives → components → sections → utilities → media
   ========================================================================= */

:root {
  /* brand */
  --bg: #0e0f10;
  --bg-elev: #15171a;
  --green: #22b573;
  --green-bright: #2bd089;
  --text: #ffffff;
  --text-muted: #a8afb5;
  --border: #23262b;

  /* type */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;

  /* layout */
  --container: 1200px;
  --gutter: clamp(1rem, 4vw, 2rem);
  --radius: 14px;

  /* motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: var(--green-bright);
  text-decoration: none;
  transition: color 160ms var(--ease);
}
a:hover { color: var(--green); }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.25rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.75rem); }
h3 { font-size: 1.125rem; }
p  { margin: 0 0 1em; color: var(--text-muted); }

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

/* ---------- grain overlay ---------- */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ---------- primitives ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 180ms var(--ease), background-color 180ms var(--ease),
              color 180ms var(--ease), border-color 180ms var(--ease);
}
.btn--primary {
  background: var(--green);
  color: #0a0b0c;
}
.btn--primary:hover {
  background: var(--green-bright);
  color: #0a0b0c;
  transform: translateY(-2px);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn--ghost:hover {
  border-color: var(--green);
  color: var(--green-bright);
  transform: translateY(-2px);
}
.btn--large { padding: 1.1rem 1.8rem; font-size: 1.05rem; }

.eyebrow {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--green-bright);
  margin: 0 0 0.75rem;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 3rem;
  text-align: center;
}
.section-head h2 { color: var(--text); }

.accent { color: var(--green-bright); }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--gutter);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms var(--ease);
}
.site-header[data-scrolled="true"] {
  border-bottom-color: var(--border);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
}
.logo:hover { color: var(--text); }
.logo__mark { width: 32px; height: 32px; color: var(--green); }
.logo__word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.16em;
}

.site-nav__list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2rem;
  margin: 0;
  padding: 0;
}
.site-nav__list a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
}
.site-nav__list a:hover { color: var(--green-bright); }
.site-nav__cta {
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  background: var(--green);
  color: #0a0b0c !important;
  transition: background 160ms var(--ease), transform 160ms var(--ease);
}
.site-nav__cta:hover {
  background: var(--green-bright);
  transform: translateY(-1px);
}

.site-nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0;
  cursor: pointer;
  position: relative;
}
.site-nav__toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  margin: 4px auto;
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}
.site-nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.site-nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: clamp(4rem, 10vw, 8rem) var(--gutter) clamp(5rem, 12vw, 9rem);
  max-width: var(--container);
  margin: 0 auto;
  overflow: hidden;
}
.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 820px;
}
.hero__title { color: var(--text); }
.hero__lede {
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  max-width: 580px;
  color: var(--text-muted);
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}
.hero__blob {
  position: absolute;
  top: -10%;
  right: -25%;
  width: 80%;
  max-width: 760px;
  opacity: 0.22;
  filter: blur(2px);
  z-index: 1;
  animation: drift 18s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translate(0, 0) rotate(0deg); }
  to   { transform: translate(-20px, 25px) rotate(-6deg); }
}

/* ---------- services ---------- */
.services {
  padding: clamp(4rem, 8vw, 6rem) var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
}
.services__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease),
              background 220ms var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--green) 50%, var(--border));
  background: color-mix(in srgb, var(--bg-elev) 92%, var(--green) 8%);
}
.card__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--green) 18%, transparent);
  color: var(--green-bright);
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
}
.card__icon svg { width: 22px; height: 22px; }
.card__title { color: var(--text); margin-bottom: 0.4rem; }
.card__body { margin: 0; font-size: 0.95rem; }

/* ---------- work ---------- */
.work {
  padding: clamp(4rem, 8vw, 6rem) var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
}
.work__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.work-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}
.work-item:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--green) 50%, var(--border));
}
.work-item__thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(120% 80% at 20% 20%, color-mix(in srgb, var(--green) 35%, transparent), transparent 60%),
    linear-gradient(140deg, #1a1d21, #0e0f10);
  display: grid;
  place-items: center;
}
.work-item__thumb span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 8vw, 5rem);
  color: color-mix(in srgb, var(--text) 25%, transparent);
  letter-spacing: 0.04em;
}
.work-item__title {
  color: var(--text);
  padding: 1rem 1.2rem 0;
  margin: 0 0 0.2rem;
}
.work-item__meta {
  padding: 0 1.2rem 1.2rem;
  margin: 0;
  font-size: 0.9rem;
}

/* ---------- principles + stack ---------- */
.principles {
  padding: clamp(4rem, 8vw, 6rem) var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
}
.principles__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}
.principle {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}
.principle:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--green) 50%, var(--border));
}
.principle__title {
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.15rem;
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin-bottom: 0.6rem;
}
.principle__num {
  color: var(--green-bright);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
}
.principle p { margin: 0; font-size: 0.95rem; }

.stack {
  margin-top: 3rem;
  padding: 1.6rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.stack__label {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}
.stack__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.stack__list li {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--green) 12%, transparent);
  color: var(--green-bright);
  border: 1px solid color-mix(in srgb, var(--green) 30%, transparent);
}

/* ---------- about ---------- */
.about {
  position: relative;
  padding: clamp(4rem, 10vw, 7rem) var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
  overflow: hidden;
}
.about__inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.about__body {
  font-size: 1.075rem;
  max-width: 640px;
}
.about__blob {
  position: absolute;
  bottom: -30%;
  left: -20%;
  width: 70%;
  max-width: 600px;
  opacity: 0.18;
  z-index: 1;
  animation: drift 22s ease-in-out infinite alternate;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--border);
}
.stats div { margin: 0; }
.stats dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: var(--green-bright);
  letter-spacing: -0.01em;
}
.stats dd {
  margin: 0.2rem 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ---------- contact ---------- */
.contact {
  padding: clamp(4rem, 10vw, 7rem) var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
}
.contact__inner {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  padding: clamp(2.5rem, 6vw, 4rem) var(--gutter);
  max-width: 760px;
  margin: 0 auto;
}
.contact__body { max-width: 480px; margin: 0 auto 1.75rem; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem var(--gutter);
  margin-top: 2rem;
}
.site-footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.site-footer__copy {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ---------- reveal animation ---------- */
/* Progressive enhancement: hidden only when JS is active. If main.js never
   runs (e.g. opening index.html via file:// in Chrome), content stays visible. */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}
.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .hero__blob, .about__blob { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive ---------- */
@media (max-width: 768px) {
  .site-nav__toggle { display: block; }

  .site-nav__list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem var(--gutter) 1rem;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 200ms var(--ease), transform 200ms var(--ease);
  }
  .site-nav__list[data-open="true"] {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .site-nav__list li { border-bottom: 1px solid var(--border); }
  .site-nav__list li:last-child { border-bottom: 0; }
  .site-nav__list a { display: block; padding: 0.9rem 0; }
  .site-nav__cta {
    background: transparent;
    color: var(--green-bright) !important;
    padding: 0.9rem 0;
  }
}