/* Shirvan Consulting: site styles
   Palette: dark navy and slate with restrained blue accents. */

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/inter-latin-wght-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --navy-950: #070d1a;
  --navy-900: #0b1324;
  --navy-850: #0e182d;
  --navy-800: #121e37;
  --slate-700: #24324d;
  --line: rgba(148, 163, 184, 0.14);
  --line-strong: rgba(148, 163, 184, 0.26);
  --text: #e8edf5;
  --text-soft: #c3cddb;
  --muted: #94a3b8;
  --accent: #6ea8ff;
  --accent-btn: #2563eb;
  --accent-btn-hover: #1d4ed8;
  --accent-tint: rgba(96, 151, 255, 0.12);

  --radius: 14px;
  --radius-sm: 10px;
  --container: 1160px;
  --gutter: clamp(1rem, 4vw, 2rem);
  --section-y: clamp(4.5rem, 10vw, 7.5rem);
  --ease: cubic-bezier(.2, .7, .2, 1);

  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--navy-900);
  color: var(--text);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.022em; margin: 0; font-weight: 650; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
svg { display: block; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

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

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem; top: -3rem;
  z-index: 100;
  padding: .6rem 1rem;
  background: var(--text);
  color: var(--navy-900);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 1rem; text-decoration: none; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .7rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: .975rem;
  line-height: 1.2;
  color: var(--text);
  transition: background-color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease), color .2s var(--ease);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent-btn); color: #fff; }
.btn-primary:hover { background: var(--accent-btn-hover); }
.btn-ghost { border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--accent); color: #fff; }
.btn-small { min-height: 38px; padding: .5rem 1rem; font-size: .9rem; border-color: var(--line-strong); }
.btn-small:hover { border-color: var(--accent); }
.btn-large { padding: .95rem 1.75rem; font-size: 1.05rem; }

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 19, 36, 0.82);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--text);
  font-weight: 650;
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.brand-mark { width: 32px; height: 32px; color: var(--accent); }
.brand-name { font-size: 1.05rem; }
.brand-sub { color: var(--muted); font-weight: 500; }

.site-nav ul { display: flex; align-items: center; gap: 2rem; }
.site-nav a:not(.btn) {
  color: var(--text-soft);
  font-size: .95rem;
  font-weight: 500;
  position: relative;
}
.site-nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s var(--ease);
}
.site-nav a:not(.btn):hover { color: var(--text); text-decoration: none; }
.site-nav a:not(.btn):hover::after { transform: scaleX(1); }
.site-nav .btn-small { color: var(--text); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; fill: none; }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4.5rem, 12vw, 8.5rem) clamp(4rem, 9vw, 6.5rem);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(60rem 30rem at 85% -10%, rgba(59, 130, 246, 0.10), transparent 60%),
    var(--navy-900);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 70% 30%, #000 10%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 70% at 70% 30%, #000 10%, transparent 75%);
  opacity: .55;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.35rem, 5.6vw, 4.1rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  margin-bottom: 1.5rem;
}
.hero h1 .accent { color: var(--accent); }
.lede {
  max-width: 38rem;
  color: var(--text-soft);
  font-size: clamp(1.075rem, 1.6vw, 1.2rem);
  margin-bottom: 2.25rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .85rem; }

.hero-panel {
  background: linear-gradient(180deg, rgba(18, 30, 55, 0.9), rgba(14, 24, 45, 0.9));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.6);
}
.panel-label {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.focus-list li {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: .9rem 0;
  border-top: 1px solid var(--line);
  font-weight: 550;
}
.focus-list li:last-child { border-bottom: 1px solid var(--line); }
.focus-index {
  color: var(--accent);
  font-size: .8rem;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.panel-note { margin: 1.25rem 0 0; color: var(--muted); font-size: .95rem; }

/* Entrance animation for the hero only; disabled for reduced motion. */
@media (prefers-reduced-motion: no-preference) {
  .hero-copy, .hero-panel { animation: rise .8s var(--ease) both; }
  .hero-panel { animation-delay: .12s; }
  @keyframes rise {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: none; }
  }
}

/* Sections */
.section { padding-block: var(--section-y); }
.section-alt {
  background: var(--navy-850);
  border-block: 1px solid var(--line);
}
.section-head { max-width: 44rem; margin-bottom: clamp(2.5rem, 5vw, 3.75rem); }
.section-head h2, .about-copy h2, .contact-panel h2 {
  font-size: clamp(1.85rem, 3.6vw, 2.6rem);
  margin-bottom: 1rem;
}
.section-intro { color: var(--text-soft); font-size: 1.1rem; margin: 0; }

/* Service cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}
.card {
  position: relative;
  padding: 2rem;
  background: var(--navy-800);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .25s var(--ease), transform .25s var(--ease), background-color .25s var(--ease);
}
.card:hover {
  border-color: rgba(110, 168, 255, 0.45);
  transform: translateY(-3px);
  background: #142241;
}
.card-icon {
  display: inline-flex;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
  border-radius: 11px;
  background: var(--accent-tint);
  color: var(--accent);
}
.card-icon svg {
  width: 22px; height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.card h3 { font-size: 1.25rem; margin-bottom: .6rem; }
.card > p { color: var(--text-soft); margin-bottom: 1.25rem; }
.card-list li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--muted);
  font-size: .975rem;
  line-height: 1.5;
}
.card-list li + li { margin-top: .5rem; }
.card-list li::before {
  content: "";
  position: absolute;
  left: 0; top: .6em;
  width: 6px; height: 6px;
  border-radius: 2px;
  background: var(--accent);
  opacity: .7;
}

/* Approach steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.25rem;
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: 3.75rem;
}
.step::before {
  content: "";
  position: absolute;
  top: 1.25rem; left: 2.75rem; right: -1.25rem;
  height: 1px;
  background: var(--line-strong);
}
.step:last-child::before { display: none; }
.step-num {
  position: absolute;
  top: 0; left: 0;
  display: inline-flex;
  width: 2.5rem; height: 2.5rem;
  align-items: center; justify-content: center;
  border: 1px solid rgba(110, 168, 255, 0.5);
  border-radius: 50%;
  background: var(--navy-900);
  color: var(--accent);
  font-weight: 600;
  font-size: .95rem;
  transition: background-color .25s var(--ease), color .25s var(--ease);
}
.step:hover .step-num { background: var(--accent-btn); color: #fff; border-color: var(--accent-btn); }
.step h3 { font-size: 1.15rem; margin-bottom: .6rem; }
.step p { color: var(--muted); font-size: .985rem; margin: 0; }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}
.about-copy p { color: var(--text-soft); font-size: 1.1rem; }
.about-aside {
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--navy-850);
}
.aside-title {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}
.tag-list { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.tag-list li {
  padding: .35rem .8rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: .875rem;
  color: var(--text-soft);
}
.principles li { color: var(--muted); font-size: .985rem; }
.principles li + li { margin-top: .75rem; }
.principles strong { color: var(--text); font-weight: 600; }

/* Contact */
.contact { padding-top: 0; }
.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) auto;
  gap: 2.5rem;
  align-items: center;
  padding: clamp(2rem, 5vw, 3.5rem);
  border: 1px solid rgba(110, 168, 255, 0.28);
  border-radius: calc(var(--radius) + 6px);
  background:
    radial-gradient(40rem 20rem at 100% 0%, rgba(59, 130, 246, 0.14), transparent 70%),
    var(--navy-800);
}
.contact-panel p:not(.eyebrow) { color: var(--text-soft); font-size: 1.1rem; margin: 0; max-width: 34rem; }
.contact-action { display: flex; flex-direction: column; align-items: center; gap: .9rem; }
.contact-email { color: var(--text-soft); font-size: .95rem; }
.contact-email:hover { color: var(--text); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--navy-950);
  padding-block: 3rem;
  font-size: .95rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem 2rem;
  align-items: start;
}
.footer-brand { font-weight: 650; margin: 0 0 .25rem; }
.footer-tag { color: var(--muted); margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: .75rem 1.75rem; }
.footer-links a { color: var(--text-soft); }
.footer-links a:hover { color: var(--text); }
.copyright {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .875rem;
}

/* Error page */
.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding-block: var(--section-y);
}
.error-page h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: 1rem; }
.error-page p { color: var(--text-soft); margin-bottom: 2rem; }

/* Responsive */
@media (max-width: 960px) {
  .hero-inner, .about-grid { grid-template-columns: 1fr; }
  .hero-panel { max-width: 32rem; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 2.5rem; }
  .step:nth-child(2)::before { display: none; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    display: none;
    background: var(--navy-900);
    border-bottom: 1px solid var(--line);
  }
  .site-nav.is-open { display: block; }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .5rem var(--gutter) 1.25rem;
  }
  .site-nav li a:not(.btn) { display: block; padding: .85rem 0; border-bottom: 1px solid var(--line); }
  .site-nav a:not(.btn)::after { display: none; }
  .site-nav .btn-small { margin-top: 1rem; width: 100%; min-height: 44px; }

  .card-grid { grid-template-columns: 1fr; }
  .card { padding: 1.6rem; }
  .contact-panel { grid-template-columns: 1fr; }
  .contact-action { align-items: flex-start; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .steps { grid-template-columns: 1fr; }
  .step::before { display: none; }
  .hero-actions .btn { flex: 1 1 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

@media print {
  .site-header, .hero-grid, .nav-toggle { display: none; }
  body { background: #fff; color: #000; }
}