/* АЙ ДЖІ ДІ — Консультування з питань інформатизації */
:root {
  --bg-dark: #0f1419;
  --bg-card: #1a2332;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #334155;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.site-header {
  background: rgba(26, 35, 50, 0.95);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.nav-list a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--text);
  background: rgba(59, 130, 246, 0.15);
}

/* Main content */
main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
}

/* Hero */
.hero {
  text-align: center;
  padding: 4rem 0;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1rem;
  color: var(--text);
}

.hero .tagline {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s;
}

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

/* Sections */
.section-title {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.section-text {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card h3 {
  color: var(--accent);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

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

/* Footer with contacts */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 2rem;
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
}

.footer-contacts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
}

.footer-contacts a {
  color: var(--text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s;
}

.footer-contacts a:hover {
  color: var(--accent);
}

.footer-contacts svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Contact page form */
.contact-form {
  max-width: 500px;
  margin-top: 2rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* Page title */
.page-title {
  font-size: 2rem;
  margin-bottom: 1rem;
}

/* About / Services content blocks */
.content-block {
  margin-bottom: 2rem;
}

.content-block h2 {
  font-size: 1.35rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.content-block p a {
  color: var(--accent);
  text-decoration: none;
}
.content-block p a:hover {
  text-decoration: underline;
}

/* Utility */
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }

@media (max-width: 600px) {
  .site-header,
  main {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}