/* Azure Software Engineer — site styles */
:root {
  --bg: #0b1220;
  --bg-2: #0e1729;
  --bg-3: #121d33;
  --card: rgba(18, 28, 48, .72);
  --line: rgba(148, 163, 184, .16);
  --line-strong: rgba(148, 163, 184, .32);
  --fg: #e6edf3;
  --fg-2: #c3cfdd;
  --muted: #8ea3ba;
  --accent: #38bdf8;
  --accent-2: #2563eb;
  --accent-soft: rgba(56, 189, 248, .14);
  --amber: #f5b547;
  --radius: 16px;
  --radius-sm: 10px;
  --font-display: "Sora", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--fg);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(37, 99, 235, .22), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(56, 189, 248, .10), transparent 60%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(148,163,184,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 20%, transparent 70%);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -.01em; line-height: 1.15; margin: 0 0 .5em; }
h1 { font-size: clamp(2.2rem, 5.2vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 600; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #04121f; padding: .5rem .75rem; border-radius: 6px; z-index: 100; }
.skip:focus { left: 8px; }

/* Brand mark */
.mark { width: 32px; height: 32px; flex: none; }
.mark-corners { fill: #7dd3fc; }
.mark-centre { fill: var(--accent); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(11, 18, 32, .72);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .7rem; color: var(--fg); font-family: var(--font-display); font-weight: 600; font-size: 1.02rem; }
.brand:hover { text-decoration: none; }
.links { display: flex; align-items: center; gap: 1.4rem; }
.links a { color: var(--fg-2); font-weight: 500; font-size: .95rem; }
.links a:hover { color: var(--fg); text-decoration: none; }
@media (max-width: 760px) {
  .links a:not(.btn) { display: none; }
  .brand-name { font-size: .95rem; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .8rem 1.3rem; border-radius: 999px; font-weight: 600; font-size: .98rem;
  border: 1px solid var(--line-strong); color: var(--fg); background: rgba(255,255,255,.03);
  transition: transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); border-color: rgba(148,163,184,.5); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; border-color: transparent;
  box-shadow: 0 8px 30px rgba(37, 99, 235, .35);
}
.btn-primary:hover { box-shadow: 0 12px 36px rgba(37, 99, 235, .45); }
.btn-ghost { background: transparent; }
.btn-small { padding: .55rem 1rem; font-size: .9rem; }
.btn-large { padding: 1rem 1.8rem; font-size: 1.05rem; font-family: var(--font-mono); font-weight: 500; letter-spacing: .01em; }

/* Eyebrow / leads */
.eyebrow {
  font-family: var(--font-mono); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 .9rem;
}
.lead { font-size: 1.2rem; color: var(--fg-2); max-width: 36rem; }
.section-lead { font-size: 1.1rem; color: var(--fg-2); max-width: 46rem; margin-bottom: 2.4rem; }
.grad {
  background: linear-gradient(90deg, #7dd3fc, #38bdf8 40%, #60a5fa 70%, #a5b4fc);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* Hero */
.hero { padding: clamp(3.5rem, 8vw, 7rem) 0 3rem; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center; }
.cta-row { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.8rem 0 2rem; }
.hero-points { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; color: var(--fg-2); font-size: .98rem; }
.hero-points li { position: relative; padding-left: 1.4rem; }
.hero-points li::before {
  content: ""; position: absolute; left: 0; top: .62em; width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft);
}
.hero-art { margin: 0; text-align: center; }
.quincunx { width: 100%; max-width: 440px; height: auto; }
.hero-art figcaption { color: var(--muted); font-size: .9rem; margin-top: .4rem; font-family: var(--font-mono); }
.qx-dot { fill: var(--bg-3); stroke: var(--accent); stroke-width: 2; }
.qx-dot-centre { fill: #0f2a4a; stroke-width: 2.5; }
.qx-pulse { fill: none; stroke: var(--accent); stroke-width: 1; opacity: .5; }
.qx-label { fill: var(--fg); font-family: var(--font-display); font-size: 17px; font-weight: 600; }
.qx-label-centre { font-size: 15px; fill: #e0f2fe; }
@media (prefers-reduced-motion: no-preference) {
  .qx-pulse { animation: pulse 3.2s ease-out infinite; transform-origin: center; transform-box: fill-box; }
  .qx-ring { animation: dash 24s linear infinite; }
  .qx-lines path:not(.qx-ring) { stroke-dasharray: 170; stroke-dashoffset: 170; animation: draw 1.4s ease-out forwards; }
  .qx-lines path:nth-child(2) { animation-delay: .15s; }
  .qx-lines path:nth-child(3) { animation-delay: .3s; }
  .qx-lines path:nth-child(4) { animation-delay: .45s; }
}
@keyframes pulse { 0% { transform: scale(.85); opacity: .6; } 100% { transform: scale(1.5); opacity: 0; } }
@keyframes dash { to { stroke-dashoffset: -480; } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { order: -1; }
  .quincunx { max-width: 320px; }
}

/* Proof strip */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(14, 23, 41, .6); }
.strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 1.4rem 1rem; display: flex; flex-direction: column; gap: .2rem; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; }
.stat-n { font-family: var(--font-display); font-size: 1.55rem; font-weight: 700; color: var(--fg); letter-spacing: -.01em; }
.stat-n-sm { font-size: 1.15rem; padding-top: .3rem; white-space: nowrap; }
.stat-l { font-size: .9rem; color: var(--muted); }
@media (max-width: 760px) {
  .strip-grid { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
}

/* Sections */
.section { padding: clamp(3.5rem, 7vw, 6rem) 0; }
.section-alt { background: linear-gradient(180deg, rgba(14,23,41,.0), rgba(14,23,41,.7) 20%, rgba(14,23,41,.7) 80%, rgba(14,23,41,0)); }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem 1.6rem 1.3rem; position: relative; overflow: hidden;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: rgba(56,189,248,.45); transform: translateY(-2px); }
.card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(400px 160px at 0% 0%, rgba(56,189,248,.10), transparent 60%);
}
.card-centre { grid-column: 1 / -1; background: linear-gradient(135deg, rgba(37,99,235,.18), rgba(18,28,48,.72) 45%); border-color: rgba(56,189,248,.35); }
.card-icon {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 1rem;
  background: var(--accent-soft); border: 1px solid rgba(56,189,248,.3);
}
.card-icon svg { width: 22px; height: 22px; fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card-centre .card-icon svg circle { fill: var(--accent); stroke: none; }
.card p { color: var(--fg-2); font-size: .98rem; }
.tags { list-style: none; padding: 0; margin: .4rem 0 0; display: flex; flex-wrap: wrap; gap: .45rem; }
.tags li {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .02em; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; padding: .22rem .6rem; background: rgba(255,255,255,.02);
}
@media (max-width: 760px) { .cards { grid-template-columns: 1fr; } }

/* Lifecycle stages */
.stages { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; counter-reset: stage; }
.stage {
  position: relative; padding: 1.5rem 1.5rem 1.2rem; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line);
}
.stage::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; border-radius: 3px 0 0 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}
.stage-n { font-family: var(--font-mono); color: var(--accent); font-size: .8rem; letter-spacing: .12em; display: block; margin-bottom: .5rem; }
.stage p { color: var(--fg-2); font-size: .96rem; margin: 0; }
@media (max-width: 900px) { .stages { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .stages { grid-template-columns: 1fr; } }

/* Principles */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.principle {
  margin: 0; padding: 1.5rem; border-radius: var(--radius);
  border: 1px solid var(--line); background: rgba(255,255,255,.02);
}
.principle p { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; color: var(--fg); margin: 0 0 .6rem; line-height: 1.35; }
.principle footer { color: var(--muted); font-size: .93rem; line-height: 1.55; }
@media (max-width: 900px) { .principles { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .principles { grid-template-columns: 1fr; } }

/* About */
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: start; }
.about-grid p { color: var(--fg-2); }
.about-list { list-style: none; padding: 0; margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--card); }
.about-list li { display: grid; grid-template-columns: 1fr 1.4fr; gap: 1rem; padding: .95rem 1.2rem; border-top: 1px solid var(--line); font-size: .95rem; }
.about-list li:first-child { border-top: 0; }
.about-list strong { font-weight: 600; color: var(--fg); }
.about-list span { color: var(--muted); }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; gap: 2rem; } }

/* Contact */
.contact { position: relative; }
.contact-inner { text-align: center; max-width: 760px; }
.contact-inner .section-lead { margin-left: auto; margin-right: auto; }
.contact .btn-large { margin-top: .4rem; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 2.5rem 0 3rem; color: var(--muted); font-size: .9rem; }
.footer-inner { display: grid; gap: .6rem; }
.footer-brand { display: flex; align-items: center; gap: .6rem; color: var(--fg); font-family: var(--font-display); font-weight: 600; }
.footer-tag { font-family: var(--font-mono); color: var(--accent); margin: 0; font-size: .85rem; }
.footer-copy { margin: 0; max-width: 60ch; }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .4s ease, transform .4s ease; }
.reveal.in { opacity: 1; transform: none; }

/* 404 page */
.notfound { min-height: 70vh; display: grid; place-items: center; text-align: center; padding: 3rem 1rem; }
.notfound .code { font-family: var(--font-mono); color: var(--accent); letter-spacing: .2em; margin-bottom: .5rem; }