/* ============================================================
   The Computer Expert — styles
   ============================================================ */

:root {
  --bg: #070b16;
  --bg-alt: #0b1120;
  --panel: rgba(19, 30, 53, 0.72);
  --panel-solid: #111c33;
  --panel-2: #16243f;
  --border: rgba(86, 112, 160, 0.22);
  --border-strong: rgba(86, 112, 160, 0.4);
  --text: #eaf1fb;
  --muted: #9fb0c9;
  --accent: #38bdf8;
  --accent-2: #22d3ee;
  --accent-3: #818cf8;
  --accent-ink: #04121f;
  --radius: 18px;
  --radius-sm: 11px;
  --shadow: 0 24px 60px -24px rgba(2, 8, 20, 0.95);
  --shadow-glow: 0 0 0 1px var(--border), 0 20px 50px -22px rgba(56, 189, 248, 0.45);
  --max: 1160px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-display: "Space Grotesk", var(--font);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

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

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

h1, h2, h3 { line-height: 1.12; margin: 0 0 .5em; letter-spacing: -0.02em; }
h1 { font-family: var(--font-display); font-size: clamp(2.1rem, 5.2vw, 3.6rem); font-weight: 700; }
h2 { font-family: var(--font-display); font-size: clamp(1.7rem, 3.6vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.16rem; font-weight: 700; }

p { margin: 0 0 1rem; }

.container { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: 22px; }

.grad-text {
  background: linear-gradient(100deg, var(--accent), var(--accent-2) 40%, var(--accent-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  text-transform: uppercase; letter-spacing: .14em;
  font-size: .76rem; font-weight: 700; color: var(--accent);
  margin: 0 0 1rem;
}
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent-2);
  box-shadow: 0 0 0 0 rgba(34, 211, 238, .6); animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 211, 238, .6); }
  70% { box-shadow: 0 0 0 8px rgba(34, 211, 238, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0); }
}

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: 0 0 8px 0; font-weight: 700;
}
.skip-link:focus { left: 0; }

/* ===== Ambient background ===== */
.bg-layer { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: var(--bg); }
.bg-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(rgba(120, 160, 220, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 160, 220, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 100% 70% at 50% 0%, #000 55%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 100% 70% at 50% 0%, #000 55%, transparent 100%);
}
.bg-blob { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; }
.bg-blob-1 { width: 620px; height: 620px; top: -220px; left: -120px;
  background: radial-gradient(circle at 30% 30%, rgba(56,189,248,.55), transparent 65%);
  animation: float1 18s ease-in-out infinite; }
.bg-blob-2 { width: 560px; height: 560px; top: 12%; right: -180px;
  background: radial-gradient(circle at 60% 40%, rgba(129,140,248,.5), transparent 65%);
  animation: float2 22s ease-in-out infinite; }
.bg-blob-3 { width: 520px; height: 520px; bottom: -220px; left: 30%;
  background: radial-gradient(circle at 50% 50%, rgba(34,211,238,.35), transparent 65%);
  animation: float1 26s ease-in-out infinite reverse; }
@keyframes float1 { 0%,100% { transform: translate(0,0); } 50% { transform: translate(40px,50px); } }
@keyframes float2 { 0%,100% { transform: translate(0,0); } 50% { transform: translate(-50px,40px); } }
.bg-noise {
  position: absolute; inset: 0; opacity: .035; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .9rem 1.5rem; border-radius: 999px; font-weight: 700; font-size: 1rem;
  cursor: pointer; border: 1px solid transparent;
  transition: transform .14s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary {
  position: relative; color: var(--accent-ink);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 14px 34px -12px rgba(56, 189, 248, 0.75);
}
.btn-primary:hover { box-shadow: 0 18px 44px -12px rgba(56, 189, 248, 0.9); }
.btn-ghost { background: rgba(255,255,255,.03); color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: rgba(56,189,248,.06); }
.btn-block { width: 100%; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(7, 11, 22, 0.7);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 800; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { display: inline-flex; filter: drop-shadow(0 4px 10px rgba(56,189,248,.35)); }
.brand-text { font-family: var(--font-display); font-size: 1.05rem; letter-spacing: -0.01em; }

.nav { display: flex; align-items: center; }
.nav-menu { list-style: none; display: flex; align-items: center; gap: .3rem; margin: 0; padding: 0; }
.nav-menu a { color: var(--muted); font-weight: 600; padding: .5rem .8rem; border-radius: 10px; font-size: .95rem; transition: color .2s, background .2s; }
.nav-menu a:hover { color: var(--text); background: rgba(255,255,255,.05); text-decoration: none; }
.nav-cta {
  color: var(--accent-ink) !important;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  margin-left: .35rem; box-shadow: 0 8px 20px -10px rgba(56,189,248,.8);
}
.nav-cta:hover { filter: brightness(1.06); background: linear-gradient(135deg, var(--accent), var(--accent-2)) !important; }
.nav-toggle { display: none; }

/* ===== Hero ===== */
.hero { position: relative; padding: clamp(3rem, 8vw, 6rem) 0 clamp(3rem, 7vw, 5.5rem); }
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem; align-items: center; }
.hero-copy { position: relative; }
.hero .lede { font-size: clamp(1.05rem, 2.1vw, 1.28rem); color: var(--muted); max-width: 560px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: 2rem 0 2.2rem; }
.hero-trust { list-style: none; display: flex; flex-wrap: wrap; gap: 1.8rem; margin: 0; padding: 1.3rem 0 0; border-top: 1px solid var(--border); color: var(--muted); font-size: .92rem; }
.hero-trust strong { font-family: var(--font-display); color: var(--text); font-size: 1.35rem; display: block; }

/* Hero visual — diagnostics device */
.hero-visual { position: relative; justify-self: center; width: 100%; max-width: 440px; }
.device {
  position: relative; z-index: 2;
  background: linear-gradient(160deg, rgba(22,36,63,.95), rgba(11,17,32,.95));
  border: 1px solid var(--border-strong); border-radius: 20px;
  box-shadow: var(--shadow), 0 0 60px -20px rgba(56,189,248,.5);
  overflow: hidden; animation: rise 6s ease-in-out infinite;
}
@keyframes rise { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.device-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--border); background: rgba(255,255,255,.02); }
.device-bar > span { width: 11px; height: 11px; border-radius: 50%; background: #35507d; }
.device-bar > span:nth-child(1) { background: #ff5f57; }
.device-bar > span:nth-child(2) { background: #febc2e; }
.device-bar > span:nth-child(3) { background: #28c840; }
.device-title { margin: 0 0 0 auto; font-family: var(--font-display); font-size: .78rem; color: var(--muted); letter-spacing: .02em; }
.device-body { padding: 20px 20px 22px; }
.diag-row { display: grid; grid-template-columns: 66px 1fr 52px; align-items: center; gap: 12px; margin-bottom: 14px; }
.diag-label { font-size: .82rem; color: var(--muted); font-weight: 600; }
.diag-track { height: 8px; border-radius: 999px; background: rgba(255,255,255,.06); overflow: hidden; }
.diag-track i {
  display: block; height: 100%; width: var(--w); border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform-origin: left; animation: fillbar 2s ease-out both;
}
.diag-track i.clean { background: linear-gradient(90deg, #22c55e, #4ade80); }
@keyframes fillbar { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.diag-val { font-size: .74rem; font-weight: 800; letter-spacing: .05em; color: var(--accent); text-align: right; }
.diag-val.ok { color: #4ade80; }
.diag-status {
  display: flex; align-items: center; gap: .5rem; margin-top: 18px; padding-top: 16px;
  border-top: 1px solid var(--border); color: #4ade80; font-weight: 600; font-size: .9rem;
}
.chip {
  position: absolute; z-index: 3; padding: .55rem .9rem; border-radius: 999px; font-size: .82rem; font-weight: 700;
  background: rgba(11,17,32,.85); border: 1px solid var(--border-strong);
  box-shadow: var(--shadow); backdrop-filter: blur(6px); white-space: nowrap;
}
.chip-1 { top: 8%; left: -26px; animation: rise 5s ease-in-out infinite; }
.chip-2 { bottom: 12%; right: -22px; animation: rise 7s ease-in-out infinite reverse; }

/* ===== Trust bar ===== */
.trustbar { background: rgba(11, 17, 32, 0.5); border-block: 1px solid var(--border); }
.trustbar-inner { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem 2.6rem; padding: 1.05rem 22px; color: var(--muted); font-weight: 600; font-size: .92rem; text-align: center; }
.trustbar-inner span { display: inline-flex; align-items: center; gap: .5rem; }
.trustbar-inner span::before { content: "✓"; color: var(--accent); font-weight: 900; }

/* ===== Sections ===== */
.section { position: relative; padding: clamp(3.5rem, 8vw, 6.5rem) 0; }
.section-alt { background: linear-gradient(180deg, rgba(11,17,32,.6), rgba(7,11,22,.2)); border-block: 1px solid var(--border); }
.section-head { max-width: 660px; margin: 0 0 2.6rem; }
.section-sub { color: var(--muted); font-size: 1.06rem; }

.grid { display: grid; gap: 1.2rem; }
.services-grid { grid-template-columns: repeat(3, 1fr); }

.card {
  position: relative; background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.6rem;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: transform .2s ease, border-color .25s ease, box-shadow .25s ease;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, rgba(56,189,248,.5), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .25s ease;
}
.card:hover { transform: translateY(-6px); border-color: transparent; box-shadow: var(--shadow-glow); }
.card:hover::before { opacity: 1; }
.card-ico {
  width: 52px; height: 52px; display: grid; place-items: center; font-size: 1.6rem;
  border-radius: 14px; margin-bottom: 1rem;
  background: linear-gradient(160deg, rgba(56,189,248,.16), rgba(129,140,248,.12));
  border: 1px solid var(--border-strong);
}
.card p { color: var(--muted); margin: 0; }
.tag {
  display: inline-block; margin-top: .5rem; font-size: .72rem; font-weight: 700; color: var(--accent);
  background: rgba(56,189,248,.12); border: 1px solid var(--border-strong);
  padding: .18rem .6rem; border-radius: 999px; letter-spacing: .03em;
}

/* ===== Why ===== */
.why-grid { grid-template-columns: repeat(2, 1fr); gap: 1.3rem; }
.why-item {
  position: relative; padding: 1.5rem 1.5rem 1.5rem 1.7rem;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); backdrop-filter: blur(8px); overflow: hidden;
}
.why-item::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: linear-gradient(var(--accent), var(--accent-3)); }
.why-item p { color: var(--muted); margin: 0; }

/* ===== Steps ===== */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.steps li { position: relative; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.6rem; backdrop-filter: blur(8px); }
.step-num {
  display: inline-grid; place-items: center; width: 44px; height: 44px; margin-bottom: .9rem;
  border-radius: 13px; font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; color: var(--accent-ink);
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); box-shadow: 0 10px 24px -12px rgba(56,189,248,.9);
}
.steps p { color: var(--muted); margin: 0; }

/* ===== About ===== */
.about-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 2.6rem; align-items: start; }
.about-copy p { color: var(--muted); }
.about-copy .btn { margin-top: .5rem; }
.about-card { background: var(--panel); border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 1.7rem; backdrop-filter: blur(8px); box-shadow: var(--shadow); }
.about-card h3 { color: var(--accent); }
.cred-list { list-style: none; margin: 0; padding: 0; }
.cred-list li { padding: .65rem 0; border-bottom: 1px solid var(--border); color: var(--muted); }
.cred-list li:last-child { border-bottom: 0; }
.cred-list li::before { content: "✓"; color: var(--accent); font-weight: 800; margin-right: .6rem; }

/* ===== Quote ===== */
.quote-inner { display: grid; grid-template-columns: 1fr 1.05fr; gap: 2.8rem; align-items: start; }
.quote-copy p { color: var(--muted); }
.quote-contact { list-style: none; margin: 1.8rem 0 0; padding: 0; }
.quote-contact li { display: flex; gap: 1rem; padding: .75rem 0; border-top: 1px solid var(--border); }
.qc-label { min-width: 64px; color: var(--muted); font-weight: 700; font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; }

.quote-form { position: relative; background: var(--panel); border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 1.8rem; box-shadow: var(--shadow); backdrop-filter: blur(10px); }
.field { margin-bottom: 1.05rem; }
.field label { display: block; font-weight: 600; margin-bottom: .38rem; font-size: .92rem; }
.field input, .field select, .field textarea {
  width: 100%; padding: .75rem .9rem; border-radius: var(--radius-sm);
  background: rgba(7,11,22,.6); border: 1px solid var(--border-strong); color: var(--text);
  font: inherit; font-size: .98rem; transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(56,189,248,.22);
}
.field textarea { resize: vertical; }
.form-note { margin: .9rem 0 0; font-size: .9rem; color: var(--muted); min-height: 1.2em; }
.form-note.ok { color: #4ade80; }
.form-note.err { color: #f87171; }

/* ===== Footer ===== */
.site-footer { background: rgba(11, 17, 32, 0.55); border-top: 1px solid var(--border); padding: 2.6rem 0; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 1.2rem 2rem; align-items: center; justify-content: space-between; }
.footer-brand strong { display: block; font-family: var(--font-display); }
.footer-brand p { color: var(--muted); margin: .2rem 0 0; font-size: .9rem; }
.footer-nav { display: flex; gap: 1.2rem; }
.footer-nav a { color: var(--muted); font-weight: 600; }
.footer-nav a:hover { color: var(--text); }
.footer-legal { color: var(--muted); font-size: .85rem; margin: 0; width: 100%; padding-top: 1rem; border-top: 1px solid var(--border); }

/* ===== Scroll reveal ===== */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 940px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-visual { order: -1; max-width: 380px; }
  .chip-1 { left: 0; } .chip-2 { right: 0; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .about-inner, .quote-inner { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .nav-toggle {
    display: inline-flex; flex-direction: column; gap: 5px; justify-content: center;
    width: 44px; height: 44px; background: rgba(255,255,255,.05); border: 1px solid var(--border-strong);
    border-radius: 11px; cursor: pointer;
  }
  .nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); margin-inline: auto; transition: .2s; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav-menu {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: .2rem;
    background: rgba(11,17,32,.97); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border);
    padding: .8rem 22px 1.2rem; max-height: 0; overflow: hidden; opacity: 0; pointer-events: none;
    transition: max-height .28s ease, opacity .2s ease;
  }
  .nav-menu.open { max-height: 420px; opacity: 1; pointer-events: auto; }
  .nav-menu a { padding: .85rem .6rem; }
  .nav-cta { margin: .4rem 0 0; text-align: center; }

  .services-grid, .why-grid, .steps { grid-template-columns: 1fr; }
  .hero-trust { gap: 1.3rem; }
  .chip { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto; animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}