/* ==========================================================================
   Trionex Technology Limited — Single-Page Website
   Design system: dark navy foundation, single blue accent, glass surfaces.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Colors */
  --clr-bg: #0a1428;            /* deep navy foundation */
  --clr-bg-alt: #0d1a33;        /* alternate section */
  --clr-bg-deep: #081020;       /* near-black navy */
  --clr-surface: rgba(255, 255, 255, 0.04);
  --clr-surface-hover: rgba(255, 255, 255, 0.07);
  --clr-border: rgba(255, 255, 255, 0.09);
  --clr-border-strong: rgba(255, 255, 255, 0.16);

  --clr-accent: #2f7bff;        /* primary accent */
  --clr-accent-bright: #4d94ff;
  --clr-accent-soft: rgba(47, 123, 255, 0.14);
  --clr-accent-glow: rgba(47, 123, 255, 0.35);
  --clr-cyan: #38bdf8;          /* gradient tint only */

  --clr-text: #f5f8ff;          /* headings / bright text */
  --clr-text-body: #a8b3c7;     /* body copy */
  --clr-text-dim: #7c8aa5;      /* muted labels */

  /* Typography */
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", var(--font-body);

  --fs-h1: clamp(2.4rem, 5vw, 3.9rem);
  --fs-h2: clamp(1.8rem, 3.4vw, 2.6rem);
  --fs-h3: 1.15rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;

  /* Layout */
  --container: 1180px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(4.5rem, 9vw, 7.5rem);
  --radius: 16px;
  --radius-sm: 10px;

  --nav-h: 76px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.35s;

  --shadow-card: 0 10px 30px rgba(3, 8, 20, 0.35);
  --shadow-pop: 0 18px 44px rgba(3, 8, 20, 0.5);
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--clr-text-body);
  background: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--clr-text);
  line-height: 1.18;
  margin: 0 0 0.6em;
  letter-spacing: -0.015em;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

a { color: var(--clr-accent-bright); text-decoration: none; }
a:hover { color: var(--clr-cyan); }

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

::selection { background: var(--clr-accent); color: #fff; }

/* ---------- Utilities ---------- */
.container {
  width: min(var(--container), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 200;
  padding: 0.7rem 1.2rem;
  background: var(--clr-accent);
  color: #fff;
  font-weight: 600;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 0; color: #fff; }

/* Section scaffolding */
.section { padding-block: var(--section-y); position: relative; }
.section--alt {
  background:
    radial-gradient(60% 80% at 85% 10%, rgba(47, 123, 255, 0.06), transparent 60%),
    var(--clr-bg-alt);
  border-block: 1px solid rgba(255, 255, 255, 0.04);
}
section[id] { scroll-margin-top: calc(var(--nav-h) + 12px); }

.section__head {
  max-width: 640px;
  margin: 0 auto clamp(2.5rem, 6vw, 4rem);
  text-align: center;
}

.section__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-accent-bright);
  margin-bottom: 1rem;
}
.section__kicker::before,
.section__kicker::after {
  content: "";
  width: 22px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-accent));
}
.section__kicker::after { background: linear-gradient(90deg, var(--clr-accent), transparent); }

.section__title { font-size: var(--fs-h2); }

.section__sub {
  color: var(--clr-text-body);
  font-size: 1.05rem;
  margin-top: -0.3em;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.72rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              background var(--dur) var(--ease), border-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}
.btn svg { width: 1.05em; height: 1.05em; }
.btn--lg { padding: 0.95rem 1.9rem; font-size: 1rem; }

.btn--primary {
  background: linear-gradient(135deg, var(--clr-accent), #1f5fe0);
  color: #fff;
  box-shadow: 0 6px 20px var(--clr-accent-glow);
}
.btn--primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px var(--clr-accent-glow);
}

.btn--ghost {
  background: var(--clr-surface);
  border-color: var(--clr-border-strong);
  color: var(--clr-text);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover {
  color: var(--clr-text);
  transform: translateY(-2px);
  background: var(--clr-surface-hover);
  border-color: rgba(255, 255, 255, 0.28);
}

.btn--light { background: #fff; color: var(--clr-bg-deep); }
.btn--light:hover { color: var(--clr-bg-deep); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35); }

.btn--outline { border-color: rgba(255, 255, 255, 0.55); color: #fff; }
.btn--outline:hover { color: #fff; transform: translateY(-2px); background: rgba(255, 255, 255, 0.12); }

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
  border-bottom: 1px solid transparent;
}
.navbar.is-scrolled {
  background: rgba(9, 17, 34, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px rgba(3, 8, 20, 0.45);
  border-bottom-color: var(--clr-border);
}

.navbar__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  width: min(var(--container), 100% - var(--gutter) * 2);
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-shrink: 0;
}

/* Logo lives on a white JPEG — chip container keeps it clean on dark bg */
.navbar__logo-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 5px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(3, 8, 20, 0.4);
  overflow: hidden;
  flex-shrink: 0;
}
.navbar__logo-chip img { width: 100%; height: 100%; object-fit: contain; }
.navbar__logo-chip--footer { width: 56px; height: 56px; border-radius: 14px; }

.navbar__brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.navbar__brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--clr-text);
  letter-spacing: -0.01em;
}
.navbar__brand-sub {
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--clr-text-dim);
}

.navbar__nav { margin-left: auto; }
.navbar__links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.5rem 0.85rem;
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--clr-text-body);
  border-radius: 8px;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-link:hover { color: var(--clr-text); }
.nav-link.is-active { color: var(--clr-text); }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.15rem;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-cyan));
}

.navbar__cta { flex-shrink: 0; padding: 0.6rem 1.3rem; }
.navbar__cta-mobile { display: none; }

/* Hamburger */
.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  cursor: pointer;
}
.navbar__toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--clr-text);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(2) { opacity: 0; }
.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + clamp(2rem, 6vh, 4rem)) 0 clamp(3rem, 7vh, 5rem);
  overflow: hidden;
  background:
    radial-gradient(55% 60% at 15% 20%, rgba(47, 123, 255, 0.13), transparent 65%),
    radial-gradient(45% 55% at 90% 80%, rgba(56, 189, 248, 0.08), transparent 60%),
    linear-gradient(180deg, var(--clr-bg-deep) 0%, var(--clr-bg) 45%, var(--clr-bg-deep) 100%);
}

.hero__bg { position: absolute; inset: 0; pointer-events: none; }

/* Subtle animated grid */
.hero__grid {
  position: absolute;
  inset: -1px;
  background-image:
    linear-gradient(rgba(120, 150, 210, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 150, 210, 0.055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(75% 70% at 50% 40%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(75% 70% at 50% 40%, #000 30%, transparent 100%);
  animation: grid-drift 26s linear infinite;
}
@keyframes grid-drift {
  from { background-position: 0 0, 0 0; }
  to   { background-position: 56px 56px, 56px 56px; }
}

/* Soft glow orbs */
.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
  animation: glow-pulse 9s var(--ease) infinite alternate;
}
.hero__glow--1 { width: 480px; height: 480px; top: -140px; left: -120px; background: rgba(47, 123, 255, 0.22); }
.hero__glow--2 { width: 420px; height: 420px; bottom: -160px; right: -100px; background: rgba(56, 189, 248, 0.14); animation-delay: -4s; }
@keyframes glow-pulse {
  from { transform: scale(1); opacity: 0.4; }
  to   { transform: scale(1.12); opacity: 0.65; }
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4.5rem);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 1.05rem 0.45rem 0.8rem;
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--clr-cyan);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 999px;
  margin-bottom: 1.4rem;
}
.hero__badge svg { width: 1em; height: 1em; }

.hero__title {
  font-size: var(--fs-h1);
  font-weight: 700;
  margin-bottom: 1.1rem;
  text-wrap: balance;
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(100deg, var(--clr-accent-bright) 10%, var(--clr-cyan) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__text {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  max-width: 34em;
  margin-bottom: 2.2rem;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; }

/* Hero visual — banner in glass frame, baked text side masked */
.hero__visual { position: relative; }

.hero__frame {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--clr-border-strong);
  background: var(--clr-surface);
  box-shadow: var(--shadow-pop);
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.hero__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 78% center; /* favour cityscape side; fade baked-text side */
}
.hero__frame-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 20, 40, 0.88) 0%, rgba(10, 20, 40, 0.35) 42%, rgba(10, 20, 40, 0) 70%),
    linear-gradient(0deg, rgba(10, 20, 40, 0.55) 0%, transparent 32%);
}

/* Floating mini-cards */
.hero__card {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.62rem 1rem;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--clr-text);
  background: rgba(13, 26, 51, 0.78);
  border: 1px solid var(--clr-border-strong);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
  animation: float 6s var(--ease) infinite alternate;
}
.hero__card svg { width: 1.1em; height: 1.1em; color: var(--clr-accent-bright); flex-shrink: 0; }
.hero__card--1 { top: 8%; left: -3%; animation-delay: 0s; }
.hero__card--2 { bottom: 14%; left: 6%; animation-delay: -2s; }
.hero__card--3 { top: -7%; right: 4%; animation-delay: -4s; }
@keyframes float {
  from { transform: translateY(-5px); }
  to   { transform: translateY(6px); }
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 1.6rem;
  transform: translateX(-50%);
  display: grid;
  place-items: center;
  width: 28px;
  height: 46px;
  opacity: 0.65;
  transition: opacity var(--dur) var(--ease);
}
.hero__scroll:hover { opacity: 1; }
.hero__scroll-mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--clr-text-dim);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 7px;
}
.hero__scroll-dot {
  width: 3px;
  height: 8px;
  border-radius: 3px;
  background: var(--clr-accent-bright);
  animation: scroll-dot 1.8s var(--ease) infinite;
}
@keyframes scroll-dot {
  0%   { transform: translateY(0); opacity: 1; }
  70%  { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ==========================================================================
   About
   ========================================================================== */
.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: start;
}

.about__intro > p:first-child {
  font-size: 1.08rem;
  color: var(--clr-text-body);
}

.about__points { display: grid; gap: 0.9rem; margin-top: 1.8rem; }
.about__points li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.97rem;
}
.about__points svg {
  width: 21px;
  height: 21px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--clr-accent-bright);
  background: var(--clr-accent-soft);
  border-radius: 50%;
  padding: 2px;
}
.about__points strong { color: var(--clr-text); font-weight: 600; }

.about__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
}

.about-card {
  padding: 1.6rem 1.4rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
              background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.about-card:hover {
  transform: translateY(-5px);
  background: var(--clr-surface-hover);
  border-color: rgba(47, 123, 255, 0.45);
  box-shadow: var(--shadow-card);
}
.about-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 1.05rem;
  color: var(--clr-accent-bright);
  background: var(--clr-accent-soft);
  border: 1px solid rgba(47, 123, 255, 0.3);
  border-radius: 12px;
}
.about-card__icon svg { width: 23px; height: 23px; }
.about-card h3 { font-size: var(--fs-h3); margin-bottom: 0.4em; }
.about-card p { font-size: 0.92rem; }

/* ==========================================================================
   Services
   ========================================================================== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}

.service-card {
  position: relative;
  padding: 1.7rem 1.5rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  backdrop-filter: blur(6px);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
              background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.service-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-cyan));
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.service-card:hover {
  transform: translateY(-6px);
  background: var(--clr-surface-hover);
  border-color: rgba(47, 123, 255, 0.45);
  box-shadow: var(--shadow-card);
}
.service-card:hover::before { opacity: 1; }

.service-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  margin-bottom: 1.15rem;
  color: var(--clr-accent-bright);
  background: var(--clr-accent-soft);
  border: 1px solid rgba(47, 123, 255, 0.28);
  border-radius: 13px;
  transition: transform var(--dur) var(--ease);
}
.service-card__icon svg { width: 25px; height: 25px; }
.service-card:hover .service-card__icon { transform: scale(1.06); }

.service-card h3 { font-size: 1.05rem; margin-bottom: 0.5em; }
.service-card p { font-size: 0.9rem; }

/* ==========================================================================
   Technologies
   ========================================================================== */
.tech__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}
/* 5 groups → tidy 3 + 2 layout; last group spans for balance */
.tech-group:nth-child(4) { grid-column: span 1; }
.tech-group:nth-child(5) { grid-column: 2 / span 1; }

.tech-group {
  padding: 1.6rem 1.5rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.tech-group:hover { border-color: rgba(47, 123, 255, 0.4); background: var(--clr-surface-hover); }

.tech-group__title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1rem;
  margin-bottom: 1.1rem;
  color: var(--clr-text);
}
.tech-group__title svg {
  width: 20px;
  height: 20px;
  color: var(--clr-accent-bright);
  flex-shrink: 0;
}

.tech-group__items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}
.tech-group__items li {
  padding: 0.38rem 0.9rem;
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--clr-text-body);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
              background var(--dur) var(--ease);
}
.tech-group__items li:hover {
  color: var(--clr-text);
  border-color: rgba(47, 123, 255, 0.5);
  background: var(--clr-accent-soft);
}

/* ==========================================================================
   Why Us — bento grid
   ========================================================================== */
.why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: auto;
  gap: 1.2rem;
}
.why-card--wide { grid-column: span 2; }

.why-card {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  padding: 1.7rem 1.6rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
              background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.why-card::after {
  content: "";
  position: absolute;
  right: -46px;
  top: -46px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 123, 255, 0.16), transparent 70%);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.why-card:hover {
  transform: translateY(-5px);
  background: var(--clr-surface-hover);
  border-color: rgba(47, 123, 255, 0.42);
  box-shadow: var(--shadow-card);
}
.why-card:hover::after { opacity: 1; }

.why-card__num {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-accent-bright);
  background: var(--clr-accent-soft);
  border: 1px solid rgba(47, 123, 255, 0.3);
  border-radius: 11px;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.why-card h3 { font-size: 1.05rem; margin-bottom: 0.35em; }
.why-card p { font-size: 0.92rem; }

/* ==========================================================================
   Process — horizontal timeline → vertical on mobile
   ========================================================================== */
.process__timeline {
  --dot: 13px;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1.4rem 1rem;
  position: relative;
  counter-reset: step;
}

/* Connecting line across the number nodes */
.process__timeline::before {
  content: "";
  position: absolute;
  top: var(--dot);
  left: calc(100% / 14);
  right: calc(100% / 14);
  height: 2px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-cyan), var(--clr-accent));
  opacity: 0.5;
}

.process-step { position: relative; text-align: center; padding-top: 1.4rem; }
.process-step__num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: calc(var(--dot) * 2.6);
  height: calc(var(--dot) * 2.6);
  margin: 0 auto 1rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--clr-text);
  background: var(--clr-bg);
  border: 2px solid var(--clr-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 5px var(--clr-bg), 0 0 18px var(--clr-accent-glow);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.process-step:hover .process-step__num {
  background: var(--clr-accent);
  color: #fff;
  transform: scale(1.08);
}
.process-step h3 { font-size: 1rem; margin-bottom: 0.35em; }
.process-step p { font-size: 0.85rem; }

/* ==========================================================================
   CTA
   ========================================================================== */
.cta {
  position: relative;
  padding: clamp(4.5rem, 10vw, 7.5rem) 0;
  overflow: hidden;
  isolation: isolate;
}
.cta__bg { position: absolute; inset: 0; z-index: -2; }
.cta__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.cta__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(8, 16, 32, 0.96) 0%, rgba(8, 16, 32, 0.86) 45%, rgba(10, 20, 40, 0.72) 100%);
}
.cta__bg img { filter: saturate(1.05); }

.cta__inner {
  max-width: 720px;
  text-align: center;
}
.cta__inner h2 { font-size: clamp(1.9rem, 4vw, 2.8rem); text-wrap: balance; }
.cta__inner p {
  font-size: 1.08rem;
  color: rgba(220, 228, 244, 0.85);
  margin-bottom: 2.2rem;
}
.cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.9rem;
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}

.contact-form {
  padding: clamp(1.6rem, 3.5vw, 2.4rem);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.form-field { margin-bottom: 1.2rem; }
.form-field label {
  display: block;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 0.45rem;
}
.form-field label span { color: var(--clr-accent-bright); }

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.78rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--clr-text);
  background: rgba(8, 16, 32, 0.55);
  border: 1px solid var(--clr-border-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.form-field select { appearance: none; background-image: none; cursor: pointer; }
.form-field textarea { resize: vertical; min-height: 120px; }

.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--clr-text-dim); }

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(47, 123, 255, 0.22);
}

.form-field.is-invalid input,
.form-field.is-invalid textarea {
  border-color: #f87171;
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.16);
}

.form-field__error {
  display: none;
  margin: 0.4rem 0 0;
  font-size: 0.8rem;
  color: #f87171;
}
.form-field.is-invalid .form-field__error { display: block; }

.contact-form__submit { width: 100%; margin-top: 0.4rem; }

.contact-form__status {
  display: none;
  margin: 1rem 0 0;
  padding: 0.8rem 1rem;
  font-size: var(--fs-small);
  border-radius: var(--radius-sm);
  background: rgba(47, 123, 255, 0.12);
  border: 1px solid rgba(47, 123, 255, 0.35);
  color: var(--clr-text);
}
.contact-form__status.is-visible { display: block; }

/* Contact info panel */
.contact-info {
  padding: clamp(1.6rem, 3vw, 2.2rem);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
}
.contact-info h3 { font-size: 1.1rem; margin-bottom: 1.2rem; }
.contact-info__company {
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 1.5rem;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--clr-border);
}
.contact-info__item:last-of-type { border-bottom: none; }
.contact-info__item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--clr-accent-bright);
}
.contact-info__label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-text-dim);
  margin-bottom: 0.15rem;
}
.contact-info__item a { font-weight: 500; }
.contact-info__item span:not(.contact-info__label) { color: var(--clr-text-body); }

.contact-info__note {
  margin-top: 1.4rem;
  padding: 1rem 1.1rem;
  font-size: var(--fs-small);
  color: var(--clr-text-body);
  background: rgba(56, 189, 248, 0.06);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--clr-bg-deep);
  border-top: 1px solid var(--clr-border);
  padding: clamp(3rem, 6vw, 4.5rem) 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1.2fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 4vw, 3rem);
  padding-bottom: 2.8rem;
}

.footer__brand { display: flex; flex-direction: column; gap: 1.1rem; align-items: flex-start; }
.footer__desc { font-size: 0.92rem; max-width: 34em; }

.footer__col h3 {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text);
  margin-bottom: 1.1rem;
}
.footer__col ul { display: grid; gap: 0.55rem; }
.footer__col a, .footer__col li {
  font-size: 0.92rem;
  color: var(--clr-text-body);
  transition: color var(--dur) var(--ease);
}
.footer__col a:hover { color: var(--clr-accent-bright); }

.footer__bottom {
  display: flex;
  justify-content: center;
  padding: 1.4rem 0;
  border-top: 1px solid var(--clr-border);
}
.footer__bottom p {
  margin: 0;
  font-size: var(--fs-small);
  color: var(--clr-text-dim);
}

/* Back to top */
.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: var(--clr-text);
  background: rgba(13, 26, 51, 0.85);
  border: 1px solid var(--clr-border-strong);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
              visibility var(--dur), border-color var(--dur) var(--ease);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { border-color: var(--clr-accent); }
.to-top svg { width: 20px; height: 20px; }

/* ==========================================================================
   Scroll reveal (JS adds .is-revealed; without JS content stays visible)
   ========================================================================== */
@media (prefers-reduced-motion: no-preference) {
  html.js .reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    transition-delay: var(--reveal-delay, 0s);
  }
  html.js .reveal.is-revealed { opacity: 1; transform: none; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1100px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .tech__grid { grid-template-columns: repeat(2, 1fr); }
  .tech-group:nth-child(4), .tech-group:nth-child(5) { grid-column: auto; }
}

@media (max-width: 980px) {
  :root { --nav-h: 68px; }

  /* Navbar → mobile menu */
  .navbar__toggle { display: flex; order: 3; margin-left: auto; }
  .navbar__cta { display: none; }

  .navbar__nav {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    bottom: 0;
    margin-left: 0;
    background: rgba(8, 16, 32, 0.97);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-top: 1px solid var(--clr-border);
    padding: 1.5rem var(--gutter) 2.5rem;
    overflow-y: auto;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.4s var(--ease), visibility 0.4s;
  }
  .navbar__nav.is-open { transform: translateX(0); visibility: visible; }

  .navbar__links {
    flex-direction: column;
    align-items: stretch;
    gap: 0.3rem;
  }
  .nav-link { display: block; padding: 0.9rem 1rem; font-size: 1.05rem; border-radius: 12px; }
  .nav-link:hover, .nav-link.is-active { background: var(--clr-surface); }
  .nav-link.is-active::after { display: none; }

  .navbar__cta-mobile { display: block; margin-top: 1.4rem; }
  .navbar__cta-mobile .btn { width: 100%; }

  /* Hero stacks */
  .hero { min-height: auto; }
  .hero__inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero__content { text-align: center; }
  .hero__text { margin-inline: auto; }
  .hero__actions { justify-content: center; }
  .hero__scroll { display: none; }

  .hero__frame { aspect-ratio: 16 / 9; }
  .hero__card--1 { left: 2%; }
  .hero__card--3 { display: none; }

  .about__grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; }

  .why__grid { grid-template-columns: repeat(2, 1fr); }
  .why-card--wide { grid-column: span 2; }

  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .services__grid { grid-template-columns: 1fr; }
  .tech__grid { grid-template-columns: 1fr; }

  .about__cards { grid-template-columns: 1fr; }

  .why__grid { grid-template-columns: 1fr; }
  .why-card--wide { grid-column: auto; }

  .footer__grid { grid-template-columns: 1fr; }

  /* Process → vertical timeline */
  .process__timeline { grid-template-columns: 1fr; gap: 1.6rem; padding-left: 0.5rem; }
  .process__timeline::before {
    top: calc(var(--dot) * 1.3);
    bottom: calc(var(--dot) * 1.3);
    left: calc(var(--dot) * 1.3);
    right: auto;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, var(--clr-accent), var(--clr-cyan), var(--clr-accent));
  }
  .process-step {
    text-align: left;
    padding: 0 0 0 3.2rem;
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 1.1rem;
  }
  .process-step__num {
    grid-row: 1 / span 2;
    margin: 0;
    width: calc(var(--dot) * 2.6);
    height: calc(var(--dot) * 2.6);
    box-shadow: 0 0 0 5px var(--clr-bg), 0 0 18px var(--clr-accent-glow);
  }
  .process-step h3 { margin: 0.2rem 0 0.25rem; }
  .process-step p { grid-column: 2; }

  .form-row { grid-template-columns: 1fr; gap: 0; }

  .hero__card--2 { display: none; }
  .hero__card--1 { padding: 0.5rem 0.85rem; font-size: 0.8rem; }
}

@media (max-width: 400px) {
  .navbar__brand-text { display: none; }
  .hero__actions .btn { width: 100%; }
  .cta__actions .btn { width: 100%; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero__grid { animation: none; }
  .hero__glow { animation: none; }
  .hero__card { animation: none; }
  .hero__scroll-dot { animation: none; }
}