/* HD-NETWORKS — Design System */

:root {
  --bg: #0b0e14;
  --bg-elevated: #11151f;
  --bg-card: #141924;
  --border: #232a3a;
  --text: #e7ebf3;
  --text-muted: #98a2b8;
  --accent: #2f6fed;
  --accent-strong: #4b84f5;
  --accent-soft: rgba(47, 111, 237, 0.16);
  --focus: #6fa8ff;
  --radius: 10px;
  --max-width: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fa;
    --bg-elevated: #ffffff;
    --bg-card: #ffffff;
    --border: #e2e5ec;
    --text: #171a21;
    --text-muted: #565f73;
    --accent: #1d4ed8;
    --accent-strong: #1739a6;
    --accent-soft: rgba(29, 78, 216, 0.1);
    --focus: #1739a6;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

a:hover {
  text-decoration: underline;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}

@media (prefers-color-scheme: light) {
  .site-header {
    background: rgba(246, 247, 250, 0.9);
  }
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  background: #ffffff;
  border-radius: 8px;
  padding: 8px 16px;
}

.brand:hover {
  text-decoration: none;
}

.brand-logo {
  height: 44px;
  width: auto;
  display: block;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 8px 10px;
  cursor: pointer;
}

.main-nav ul {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: none;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    display: none;
    width: 100%;
    border-top: 1px solid var(--border);
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
  }

  .main-nav li {
    border-bottom: 1px solid var(--border);
  }

  .main-nav a {
    display: block;
    padding: 12px 0;
  }

  .header-inner {
    flex-wrap: wrap;
  }
}

/* Hero */

.hero {
  padding: 96px 0 72px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero {
    padding: 56px 0 48px;
  }
}

.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3.1rem);
  line-height: 1.15;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 52ch;
  margin: 0 0 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-visual {
  aspect-ratio: 1 / 1;
  max-height: 420px;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-strong);
}

.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Sections */

section {
  padding: 64px 0;
}

.section-head {
  max-width: 60ch;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.section-head p {
  color: var(--text-muted);
  margin: 0;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* Cards / grid */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}

.card .icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Stats / advantages */

.stat-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.stat-list li {
  list-style: none;
  border-left: 2px solid var(--accent);
  padding-left: 16px;
}

.stat-list strong {
  display: block;
  font-size: 1.4rem;
  margin-bottom: 4px;
}

.stat-list span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* CTA band */

.cta-band {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.cta-band h2 {
  margin: 0 0 12px;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.cta-band p {
  color: var(--text-muted);
  margin: 0 0 28px;
}

/* Prose / legal pages */

.prose {
  max-width: 72ch;
}

.about-intro {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  margin-bottom: 8px;
}

.portrait {
  width: 160px;
  height: 198px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

@media (max-width: 560px) {
  .about-intro {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

.prose h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.4rem);
  margin: 0 0 28px;
}

.prose h2 {
  font-size: 1.3rem;
  margin: 40px 0 12px;
}

.prose h3 {
  font-size: 1.05rem;
  margin: 24px 0 8px;
}

.prose p,
.prose li {
  color: var(--text-muted);
}

.prose a {
  color: var(--accent);
}

.page-header {
  padding: 56px 0 8px;
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
}

@media (max-width: 860px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info dl {
  margin: 24px 0 0;
}

.contact-info dt {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 18px;
}

.contact-info dd {
  margin: 4px 0 0;
  font-size: 1.05rem;
}

form.contact-form {
  display: grid;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

@media (max-width: 560px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
}

input,
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font: inherit;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--accent);
}

.field-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.form-status.success {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent);
}

.form-status.error {
  background: rgba(220, 61, 61, 0.1);
  color: #e5484d;
  border: 1px solid #e5484d;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-note {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #06251a;
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 100;
}

.skip-link:focus {
  left: 0;
}