/* Red Gear — shared visual system */

@property --orb-shift {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 0%;
}

:root {
  color-scheme: dark;
  --bg: oklch(0.12 0.02 25);
  --bg-deep: oklch(0.09 0.018 22);
  --fg: oklch(0.97 0.01 80);
  --muted: oklch(0.76 0.02 55);
  --faint: oklch(0.62 0.02 50);
  --accent: oklch(0.63 0.24 25);
  --accent-hot: oklch(0.68 0.25 22);
  --ember: oklch(0.72 0.18 45);
  --gold: oklch(0.84 0.1 70);
  --glass: oklch(0.22 0.02 25 / 0.45);
  --glass-strong: oklch(0.2 0.02 25 / 0.72);
  --line: oklch(1 0 0 / 0.1);
  --shadow: 0 24px 60px oklch(0.08 0.03 25 / 0.55);
  --radius: 1.25rem;
  --wrap: 72rem;
  --font: "Outfit", system-ui, sans-serif;
  --display: "Syne", "Outfit", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: oklch(0.55 0.22 25 / 0.45);
  color: #fff;
}

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin: 0;
}

p { margin: 0; }

/* Atmosphere */

.fx {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 55% 45% at 78% 18%, oklch(0.52 0.22 25 / 0.18), transparent 62%),
    radial-gradient(ellipse 50% 40% at 4% 18%, oklch(0.42 0.08 250 / 0.14), transparent 55%),
    radial-gradient(ellipse 45% 35% at 48% 108%, oklch(0.5 0.16 45 / 0.16), transparent 60%),
    linear-gradient(180deg, oklch(0.13 0.025 25), var(--bg-deep) 55%, oklch(0.08 0.02 20));
  animation: orb-drift 22s ease-in-out infinite alternate;
}

.fx::before {
  content: "";
  position: absolute;
  width: min(36rem, 80vw);
  height: min(36rem, 80vw);
  right: -8%;
  top: -12%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%,
      oklch(0.62 0.22 25 / 0.16),
      oklch(0.55 0.18 30 / 0.06) 42%,
      transparent 70%);
  filter: blur(12px);
}

.fx::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(oklch(1 0 0 / 0.035) 1px, transparent 1px),
    linear-gradient(90deg, oklch(1 0 0 / 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 20%, black, transparent 75%);
  opacity: 0.5;
}

@keyframes gear-turn {
  to { transform: rotate(360deg); }
}

@keyframes orb-drift {
  to { --orb-shift: 12%; }
}

/* Layout */

.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

.wrap--narrow { width: min(100% - 2.5rem, 48rem); }
.wrap--mid { width: min(100% - 2.5rem, 56rem); }

.section {
  position: relative;
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
}

.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }

.section + .section {
  border-top: 1px solid var(--line);
}

.section--band {
  background:
    linear-gradient(180deg, oklch(1 0 0 / 0.035), oklch(1 0 0 / 0.01));
  border-block: 1px solid var(--line);
}

.section__head { margin-bottom: clamp(1.5rem, 4vw, 2.5rem); }
.section__head--center { text-align: center; }

.kicker {
  display: inline-block;
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--accent-hot), var(--ember));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.display {
  font-size: clamp(2.2rem, 5.4vw, 4.35rem);
  background: linear-gradient(165deg, #fff 8%, oklch(0.93 0.04 70) 42%, oklch(0.82 0.12 35) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.title {
  font-size: clamp(1.9rem, 4vw, 3.15rem);
  background: linear-gradient(180deg, #fff, oklch(0.86 0.05 50));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  margin-top: 1.25rem;
  max-width: 40rem;
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--muted);
}

.lede--center {
  margin-inline: auto;
}

.subhead {
  margin: 2.5rem 0 1rem;
  font-size: 1.05rem;
  color: oklch(0.9 0.015 70);
}

/* Navigation */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklch, var(--bg-deep) 62%, transparent);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid transparent;
  border-image: linear-gradient(90deg, transparent, oklch(0.65 0.22 25 / 0.55), oklch(1 0 0 / 0.12), transparent) 1;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-block: 1.15rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--display);
  font-weight: 750;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.brand__mark {
  width: 1.45rem;
  height: 1.45rem;
  flex-shrink: 0;
  background: url("/img/gear.svg") center / contain no-repeat;
  filter: drop-shadow(0 0 10px oklch(0.6 0.22 25 / 0.55));
  animation: gear-turn 18s linear infinite;
}

.nav-cluster {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1.15rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.nav-links a {
  position: relative;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"],
.nav-links a.is-active {
  color: var(--fg);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--ember));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after,
.nav-links a.is-active::after {
  transform: scaleX(1);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-left: 1.25rem;
  border-left: 1px solid var(--line);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.lang-switch a {
  color: var(--faint);
  transition: color 0.2s ease;
}

.lang-switch a:hover { color: var(--fg); }

.lang-switch a[aria-current="page"] {
  color: var(--fg);
  font-weight: 600;
}

.lang-switch span { color: oklch(0.4 0.02 30); }

/* Hero */

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4.5rem, 12vw, 8rem);
}

.hero__gear {
  position: absolute;
  width: min(38rem, 78vw);
  height: min(38rem, 78vw);
  right: max(-4rem, -6%);
  top: -2%;
  pointer-events: none;
}

.hero__gear::before,
.hero__gear::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("/img/gear.svg") center / contain no-repeat;
  animation: gear-turn 80s linear infinite;
}

.hero__gear::before {
  opacity: 0.22;
  filter:
    drop-shadow(0 0 24px oklch(0.62 0.24 25 / 0.8))
    drop-shadow(0 0 64px oklch(0.55 0.22 25 / 0.55));
}

.hero__gear::after {
  opacity: 0.62;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  margin-bottom: 1.35rem;
  padding: 0.4rem 0.95rem;
  border-radius: 999px;
  font-size: 0.85rem;
  color: oklch(0.86 0.08 30);
  background:
    linear-gradient(var(--glass-strong), var(--glass-strong)) padding-box,
    linear-gradient(120deg, oklch(0.7 0.22 25 / 0.8), oklch(1 0 0 / 0.12), oklch(0.8 0.14 55 / 0.55)) border-box;
  border: 1px solid transparent;
  box-shadow: 0 0 28px oklch(0.55 0.22 25 / 0.18);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.4rem;
  border-radius: 1rem;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn--primary {
  color: #fff;
  background: linear-gradient(145deg, oklch(0.7 0.23 25), oklch(0.55 0.24 25) 55%, oklch(0.48 0.2 28));
  box-shadow:
    0 10px 28px oklch(0.5 0.22 25 / 0.38),
    inset 0 1px 0 oklch(1 0 0 / 0.28);
}

.btn--primary:hover {
  filter: brightness(1.06);
  box-shadow:
    0 14px 36px oklch(0.52 0.24 25 / 0.48),
    inset 0 1px 0 oklch(1 0 0 / 0.32);
}

.btn--ghost {
  color: var(--fg);
  background: oklch(1 0 0 / 0.04);
  border-color: oklch(1 0 0 / 0.16);
}

.btn--ghost:hover {
  border-color: oklch(1 0 0 / 0.32);
  background: oklch(1 0 0 / 0.07);
}

.link-arrow {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.9rem;
  background: linear-gradient(90deg, var(--accent-hot), var(--ember));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.link-arrow:hover { filter: brightness(1.15); }

/* Trust bar */

.trust-bar {
  padding-block: 0.95rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
  background:
    linear-gradient(90deg, transparent, oklch(0.6 0.2 25 / 0.12), transparent),
    linear-gradient(180deg, oklch(1 0 0 / 0.04), oklch(1 0 0 / 0.015));
  border-block: 1px solid var(--line);
}

/* Cards */

.grid {
  display: grid;
  gap: 1.1rem;
}

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  position: relative;
  isolation: isolate;
  padding: 1.6rem;
  border-radius: var(--radius);
  background:
    linear-gradient(165deg, oklch(0.24 0.025 25 / 0.7), oklch(0.16 0.02 22 / 0.5));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(150deg,
    oklch(1 0 0 / 0.28),
    oklch(1 0 0 / 0.05) 38%,
    oklch(0.65 0.22 25 / 0.4) 100%);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  pointer-events: none;
}

.card::after {
  content: "";
  position: absolute;
  width: 8rem;
  height: 8rem;
  right: -2rem;
  top: -3rem;
  border-radius: 50%;
  background: radial-gradient(circle, oklch(0.65 0.22 25 / 0.28), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 28px 70px oklch(0.1 0.04 25 / 0.65);
}

a.card { color: inherit; }

.card h3,
.card h4 {
  font-size: 1.15rem;
  margin-bottom: 0.55rem;
}

.card p,
.card .muted {
  color: var(--muted);
  font-size: 0.95rem;
}

.card--pad { padding: 2rem; }

.card--contact {
  padding: clamp(1.75rem, 4vw, 2.6rem);
  background:
    linear-gradient(160deg, oklch(0.28 0.05 25 / 0.55), oklch(0.16 0.02 22 / 0.6));
}

.card--contact::after {
  width: 16rem;
  height: 16rem;
  background: radial-gradient(circle, oklch(0.62 0.24 25 / 0.35), transparent 70%);
}

.step-label {
  margin: 0 0 0.45rem;
  font-size: 0.85rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent-hot), var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.center { text-align: center; }
.mt-lg { margin-top: 2.75rem; }

/* Marquee / tech */

.marquee {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
}

.marquee-track {
  display: flex;
  width: max-content;
  gap: 0.85rem;
  padding-inline: 0.75rem;
  animation: marquee 45s linear infinite;
}

.marquee-track:hover { animation-play-state: paused; }

.marquee-set {
  display: flex;
  gap: 0.85rem;
  flex-shrink: 0;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 3.1rem;
  padding: 0 1.5rem;
  border-radius: 999px;
  color: oklch(0.88 0.02 70);
  font-size: 0.9rem;
  white-space: nowrap;
  flex-shrink: 0;
  background:
    linear-gradient(oklch(1 0 0 / 0.05), oklch(1 0 0 / 0.05)) padding-box,
    linear-gradient(130deg, oklch(1 0 0 / 0.22), oklch(0.62 0.2 25 / 0.45), oklch(1 0 0 / 0.08)) border-box;
  border: 1px solid transparent;
}

.tech-badge--lg {
  height: 4rem;
  padding: 0 2rem;
  border-radius: 1rem;
  font-weight: 550;
}

/* Expertise tabs */

.service-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--line);
}

.service-tab {
  flex: 1;
  padding: 0 0 0.8rem;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--faint);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 650;
  cursor: pointer;
}

.service-tab[aria-selected="true"] {
  color: var(--fg);
  border-bottom-color: var(--accent);
}

.service-panel { display: none; }
.service-panel.is-active { display: block; }

.service-col-title {
  display: none;
  font-size: 1.15rem;
  margin-bottom: 1.15rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.stack { display: grid; gap: 0.85rem; }

@media (min-width: 768px) {
  .service-tabs { display: none; }
  .service-panel,
  .service-panel.is-active { display: block; }
  .service-col-title { display: block; }
}

/* Motion */

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

  .fx,
  .brand__mark,
  .hero__gear::before,
  .hero__gear::after {
    animation: none;
  }

  .marquee { mask-image: none; -webkit-mask-image: none; }

  .marquee-track {
    animation: none;
    flex-wrap: wrap;
    justify-content: center;
    width: auto;
    max-width: var(--wrap);
    margin-inline: auto;
    gap: 0.75rem;
  }

  .marquee-set:last-child { display: none; }

  .card:hover,
  .btn:hover { transform: none; }
}

@media (max-width: 720px) {
  .nav-inner { align-items: flex-start; }
  .nav-cluster { flex-direction: column; align-items: flex-end; gap: 0.7rem; }
  .lang-switch { border-left: 0; padding-left: 0; }
}