/* ==========================================================================
   Pristine Lex-Tech Associates — design system
   Trustworthy, restrained, enterprise-consulting visual identity.
   Deep navy + teal accent + limited gold, generous whitespace, no build
   step required (hand-written, no Tailwind/PostCSS toolchain).
   ========================================================================== */

:root {
  /* Colour: deep navy base, teal accent, gold used sparingly */
  --color-navy-950: #0a1526;
  --color-navy-900: #0f1f38;
  --color-navy-800: #16304f;
  --color-navy-700: #1f3f66;
  --color-navy-100: #e6ecf3;

  --color-teal-600: #0d7d84;
  --color-teal-500: #10979f;
  --color-teal-100: #e2f4f4;

  --color-gold-500: #b8912f;
  --color-gold-100: #f6efdd;

  --color-grey-50: #f7f8fa;
  --color-grey-100: #eef0f3;
  --color-grey-200: #dde1e6;
  --color-grey-400: #9aa4b2;
  --color-grey-600: #5b6472;
  --color-grey-800: #2a3038;

  --color-white: #ffffff;
  --color-success: #1f7a4d;
  --color-warning: #a15c00;
  --color-danger: #a3222c;

  --color-bg: var(--color-white);
  --color-bg-muted: var(--color-grey-50);
  --color-text: var(--color-navy-950);
  --color-text-muted: var(--color-grey-600);
  --color-border: var(--color-grey-200);
  --color-link: var(--color-teal-600);
  --color-focus: var(--color-gold-500);

  --font-sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  --shadow-sm: 0 1px 2px rgba(10, 21, 38, 0.06);
  --shadow-md: 0 4px 16px rgba(10, 21, 38, 0.10);
  --shadow-lg: 0 12px 32px rgba(10, 21, 38, 0.14);

  --container-max: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: var(--color-navy-950);
    --color-bg-muted: var(--color-navy-900);
    --color-text: var(--color-grey-50);
    --color-text-muted: var(--color-grey-400);
    --color-border: var(--color-navy-700);
    --color-link: var(--color-teal-500);
  }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}
img, svg { max-width: 100%; display: block; }
h1, h2, h3, h4, h5 { font-family: var(--font-serif); line-height: 1.25; margin: 0 0 var(--space-4); color: var(--color-text); }
h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.35rem; }
p { margin: 0 0 var(--space-4); }
a { color: var(--color-link); text-decoration: underline; text-underline-offset: 2px; }
a:hover { text-decoration: none; }
ul, ol { padding-left: 1.25rem; }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-navy-950);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  z-index: 1000;
}
.skip-link:focus { left: var(--space-2); top: var(--space-2); }

/* ---------- Layout ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.section { padding: var(--space-16) 0; }
.section--muted { background: var(--color-bg-muted); }
.grid {
  display: grid;
  gap: var(--space-6);
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.stack { display: flex; flex-direction: column; gap: var(--space-4); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }

/* ---------- Header / Nav ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
  gap: var(--space-4);
}
.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1.1;
}
.brand__name { font-family: var(--font-serif); font-weight: 700; font-size: 1.15rem; color: var(--color-navy-950); }
.brand__tagline { font-size: 0.72rem; color: var(--color-teal-600); letter-spacing: 0.02em; }
@media (prefers-color-scheme: dark) { .brand__name { color: var(--color-grey-50); } }

.main-nav { display: flex; gap: var(--space-4); flex-wrap: wrap; align-items: center; }
.main-nav a { color: var(--color-text); text-decoration: none; font-size: 0.95rem; }
.main-nav a:hover { color: var(--color-teal-600); }
.main-nav__cta { display: flex; gap: var(--space-2); align-items: center; }

.lang-switch {
  display: inline-flex;
  gap: var(--space-1);
  font-size: 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.lang-switch a { padding: var(--space-1) var(--space-2); text-decoration: none; }
.lang-switch a[aria-current="true"] { background: var(--color-navy-950); color: #fff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.2;
}
.btn--primary { background: var(--color-teal-600); color: #fff; }
.btn--primary:hover { background: var(--color-teal-500); text-decoration: none; }
.btn--secondary { background: transparent; color: var(--color-navy-950); border-color: var(--color-navy-800); }
.btn--secondary:hover { background: var(--color-navy-100); text-decoration: none; }
@media (prefers-color-scheme: dark) {
  .btn--secondary { color: var(--color-grey-50); border-color: var(--color-grey-400); }
  .btn--secondary:hover { background: var(--color-navy-800); }
}
.btn--gold { background: var(--color-gold-500); color: #241b04; }
.btn--danger { background: var(--color-danger); color: #fff; }
.btn--sm { padding: 0.4rem 0.8rem; font-size: 0.85rem; }
.btn--block { display: block; width: 100%; text-align: center; }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--color-navy-950), var(--color-navy-800));
  color: #fff;
  padding: var(--space-16) 0;
}
.hero h1 { color: #fff; }
.hero p { color: var(--color-grey-100); max-width: 60ch; }
.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--color-teal-500);
  font-weight: 700;
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.card h3 { margin-bottom: var(--space-2); }
.card--link { text-decoration: none; color: inherit; display: block; transition: box-shadow .15s ease, transform .15s ease; }
.card--link:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.badge--teal { background: var(--color-teal-100); color: var(--color-teal-600); }
.badge--gold { background: var(--color-gold-100); color: #6b5218; }
.badge--danger { background: #fbe3e3; color: var(--color-danger); }
.badge--muted { background: var(--color-grey-100); color: var(--color-grey-600); }

/* ---------- Forms ---------- */
label { display: block; font-weight: 600; margin-bottom: var(--space-1); font-size: 0.92rem; }
.form-row { margin-bottom: var(--space-4); }
input[type="text"], input[type="email"], input[type="password"], input[type="tel"],
input[type="url"], input[type="number"], input[type="date"], input[type="datetime-local"],
select, textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-bg);
  color: var(--color-text);
}
textarea { min-height: 8rem; resize: vertical; }
.help-text { font-size: 0.82rem; color: var(--color-text-muted); margin-top: var(--space-1); }
.field-error { color: var(--color-danger); font-size: 0.85rem; margin-top: var(--space-1); }
fieldset { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); }

/* ---------- Alerts / messages ---------- */
.alert { padding: var(--space-4); border-radius: var(--radius-sm); border: 1px solid transparent; margin-bottom: var(--space-4); }
.alert--info { background: var(--color-teal-100); border-color: var(--color-teal-500); color: #063f42; }
.alert--success { background: #e5f5ec; border-color: var(--color-success); color: #12492e; }
.alert--warning { background: var(--color-gold-100); border-color: var(--color-gold-500); color: #5c4712; }
.alert--danger { background: #fbe3e3; border-color: var(--color-danger); color: #5c1015; }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: var(--space-3); border-bottom: 1px solid var(--color-border); font-size: 0.92rem; }
th { color: var(--color-text-muted); font-weight: 600; text-transform: uppercase; font-size: 0.72rem; letter-spacing: 0.04em; }

/* ---------- Dashboard widgets (portal) ---------- */
.stat-tile { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); background: var(--color-bg); }
.stat-tile__value { font-family: var(--font-serif); font-size: 1.8rem; color: var(--color-navy-950); }
@media (prefers-color-scheme: dark) { .stat-tile__value { color: #fff; } }
.stat-tile__label { font-size: 0.8rem; color: var(--color-text-muted); }
.progress-bar { height: 8px; border-radius: 999px; background: var(--color-grey-100); overflow: hidden; }
.progress-bar__fill { height: 100%; background: var(--color-teal-600); }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-navy-950); color: var(--color-grey-100); padding: var(--space-16) 0 var(--space-8); margin-top: var(--space-16); }
.site-footer a { color: var(--color-grey-100); }
.site-footer h4 { color: #fff; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.04em; font-family: var(--font-sans); }
.site-footer .grid { margin-bottom: var(--space-8); }
.site-footer .fine-print { font-size: 0.82rem; color: var(--color-grey-400); border-top: 1px solid var(--color-navy-800); padding-top: var(--space-6); }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-2); }

/* ---------- Cookie banner ---------- */
.cookie-banner {
  position: fixed;
  left: var(--space-4);
  right: var(--space-4);
  bottom: var(--space-4);
  max-width: 720px;
  margin: 0 auto;
  background: var(--color-navy-950);
  color: #fff;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
  z-index: 200;
}
.cookie-banner p { margin: 0; font-size: 0.88rem; color: var(--color-grey-100); }

/* ---------- Utilities ---------- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.disclaimer-box {
  border-left: 4px solid var(--color-gold-500);
  background: var(--color-gold-100);
  color: #4a3a0f;
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}
@media (prefers-color-scheme: dark) {
  .disclaimer-box { background: var(--color-navy-800); color: var(--color-grey-100); }
}