/* BlueScale Security — shared styles
   Mobile-first, accessible, blue/slate palette. No stock photos. */

:root {
  --blue-900: #0b1f3a;
  --blue-800: #123056;
  --blue-700: #1a4474;
  --blue-600: #245a96;
  --blue-500: #2f74b8;
  --blue-100: #e8f1f8;
  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;
  --focus: #f59e0b;
  --max: 68rem;
  --radius: 0.5rem;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 4px 12px rgba(15, 23, 42, 0.04);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--slate-900);
}

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

a {
  color: var(--blue-600);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--blue-800);
}

a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--blue-900);
  color: var(--white);
  padding: 0.75rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header / nav */
.site-header {
  background: var(--blue-900);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  color: var(--white);
  text-decoration: none;
}

.logo-mark {
  display: block;
  width: 36px;
  height: 36px;
  border-radius: 0.35rem;
  flex-shrink: 0;
}

.logo-text span {
  font-weight: 500;
  opacity: 0.85;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: var(--white);
  border-radius: var(--radius);
  padding: 0.4rem 0.75rem;
  font: inherit;
  cursor: pointer;
}

.nav-toggle[aria-expanded="true"] {
  background: rgba(255, 255, 255, 0.1);
}

.site-nav {
  display: none;
}

.site-nav.is-open {
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--blue-800);
  padding: 0.75rem 1rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.site-nav a {
  display: block;
  color: var(--white);
  text-decoration: none;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.12);
}

@media (min-width: 48rem) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: block;
    position: static;
    background: transparent;
    padding: 0;
    border: 0;
  }

  .site-nav ul {
    flex-direction: row;
    gap: 0.25rem;
  }

  .site-nav a {
    padding: 0.4rem 0.75rem;
  }
}

/* Buttons */
.btn {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  text-decoration: none;
  cursor: pointer;
  line-height: 1.3;
}

.btn-primary {
  background: var(--blue-500);
  color: var(--white);
  border-color: var(--blue-500);
}

.btn-primary:hover {
  background: var(--blue-600);
  border-color: var(--blue-600);
  color: var(--white);
}

.btn-secondary {
  background: transparent;
  color: var(--blue-100);
  border-color: rgba(255, 255, 255, 0.45);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
}

.btn-outline {
  color: var(--blue-700);
  border-color: var(--blue-600);
}

.btn-outline:hover {
  background: var(--blue-100);
  color: var(--blue-800);
}

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--blue-900) 0%, var(--blue-700) 100%);
  color: var(--white);
  padding: 3.5rem 0 3.75rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.hero .lead {
  margin: 0 0 1.75rem;
  font-size: 1.125rem;
  max-width: 40rem;
  opacity: 0.95;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section-alt {
  background: var(--slate-50);
  border-block: 1px solid var(--slate-200);
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  letter-spacing: -0.02em;
  color: var(--blue-900);
}

.section .intro {
  margin: 0 0 1.75rem;
  max-width: 40rem;
  color: var(--slate-700);
}

.eyebrow {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue-600);
  margin-bottom: 0.5rem;
}

/* Cards */
.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 40rem) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 60rem) {
  .card-grid.cols-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card {
  border: 1px solid var(--slate-200);
  border-radius: calc(var(--radius) + 0.15rem);
  padding: 1.35rem 1.25rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.card h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--blue-900);
}

.card p {
  margin: 0;
  color: var(--slate-700);
  flex: 1;
}

.card a.card-link {
  font-weight: 600;
  text-decoration: none;
  color: var(--blue-600);
}

.card a.card-link:hover {
  text-decoration: underline;
}

.list-plain {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--slate-700);
}

.list-plain li + li {
  margin-top: 0.4rem;
}

/* Audience / who */
.who-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 48rem) {
  .who-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.who-item {
  border-left: 4px solid var(--blue-500);
  padding: 1rem 1.15rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  border: 1px solid var(--slate-200);
  border-left-width: 4px;
  border-left-color: var(--blue-500);
}

.who-item h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  color: var(--blue-900);
}

.who-item p {
  margin: 0;
  color: var(--slate-700);
  font-size: 0.98rem;
}

/* CTA band */
.cta-band {
  background: var(--blue-800);
  color: var(--white);
  padding: 2.75rem 0;
}

.cta-band h2 {
  margin: 0 0 0.6rem;
  color: var(--white);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
}

.cta-band p {
  margin: 0 0 1.25rem;
  max-width: 36rem;
  opacity: 0.95;
}

/* Page hero (inner pages) */
.page-hero {
  background: var(--slate-100);
  border-bottom: 1px solid var(--slate-200);
  padding: 2.25rem 0;
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  color: var(--blue-900);
  letter-spacing: -0.02em;
}

.page-hero .lead {
  margin: 0;
  max-width: 40rem;
  color: var(--slate-700);
}

/* Prose blocks on service pages */
.prose {
  max-width: 42rem;
}

.prose h2 {
  margin: 2rem 0 0.6rem;
  font-size: 1.25rem;
  color: var(--blue-900);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p,
.prose ul {
  color: var(--slate-700);
}

.prose ul {
  padding-left: 1.2rem;
}

.prose li + li {
  margin-top: 0.35rem;
}

.not-box {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin: 1.5rem 0;
}

.not-box h2 {
  margin-top: 0;
  font-size: 1.05rem;
}

/* Forms */
.form {
  max-width: 36rem;
  display: grid;
  gap: 1rem;
}

.form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--slate-900);
}

.form .hint {
  display: block;
  font-weight: 400;
  font-size: 0.9rem;
  color: var(--slate-500);
  margin-top: 0.25rem;
}

.form input,
.form select,
.form textarea {
  width: 100%;
  font: inherit;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--slate-500);
  border-radius: var(--radius);
  color: var(--slate-900);
}

.form textarea {
  min-height: 8rem;
  resize: vertical;
}

.form .field {
  margin: 0;
}

.form-note {
  font-size: 0.9rem;
  color: var(--slate-600);
  margin: 0.5rem 0 0;
}

/* Tools / embed placeholder */
.embed-slot {
  min-height: 12rem;
  border: 2px dashed var(--slate-500);
  border-radius: var(--radius);
  background: var(--slate-50);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  text-align: center;
  color: var(--slate-600);
}

.embed-slot strong {
  display: block;
  color: var(--blue-900);
  margin-bottom: 0.35rem;
}

/* Footer */
.site-footer {
  background: var(--slate-900);
  color: var(--slate-200);
  padding: 2rem 0;
  font-size: 0.95rem;
}

.site-footer a {
  color: var(--blue-100);
}

.site-footer p {
  margin: 0 0 0.4rem;
}

.site-footer .fine {
  color: var(--slate-500);
  font-size: 0.85rem;
  margin-top: 0.75rem;
}