/* ===== DigAI — базовые стили ===== */

:root {
  --ink: #1a1a2e;
  --ink-soft: #4a5568;
  --accent: #2d6a9f;
  --bg-soft: #f7f9fc;
  --line: #e2e8f0;
}

body {
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.logo span { color: var(--accent); }
.main-nav { display: flex; gap: 1.5rem; }
.nav-link {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-link:hover, .nav-link.active { color: var(--accent); }

/* Hero */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
}
.hero-tag {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.8rem;
  opacity: 0.85;
  margin-bottom: 0.5rem;
}
.hero h1 { color: #fff; }
.hero .lead { opacity: 0.9; }

/* Slider */
.projects-section { background: var(--bg-soft); }
.slider {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.slider-track {
  display: flex;
  transition: transform 0.4s ease;
}
.slide {
  min-width: 100%;
  padding: 4rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.slide-content { text-align: center; max-width: 480px; }
.slide-content:has(.slide-logo) {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 0 1.5rem;
  align-items: start;
  max-width: 640px;
  text-align: left;
}
.slide-badge { grid-column: 1 / -1; width: fit-content; margin: 0 auto; }
.slide-content h3 { grid-column: 1 / -1; text-align: center; }
.slide-logo {
  width: 112px;
  height: 112px;
  grid-row: 3;
  grid-column: 1;
  align-self: center;
}
.slide-content:has(.slide-logo) .slide-desc { grid-column: 2; margin-bottom: 0; }
.slide-content:has(.slide-logo) .btn { grid-column: 1 / -1; justify-self: center; }
.slide-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.slide h3 { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.5rem; }
.slide-desc { color: var(--ink-soft); margin-bottom: 1.5rem; }

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  z-index: 5;
  transition: background 0.2s;
}
.slider-btn:hover { background: var(--bg-soft); }
.slider-btn--prev { left: 1rem; }
.slider-btn--next { right: 1rem; }

.slider-dots {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
}
.slider-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line);
  cursor: pointer;
  transition: background 0.2s;
}
.slider-dots .dot.active { background: var(--accent); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.9rem;
}

/* Project page */
.project-hero {
  background: var(--bg-soft);
  padding: 3rem 0;
  border-bottom: 1px solid var(--line);
}
.project-logo {
  width: 112px;
  height: 112px;
  margin-right: 30px;
}
.project-content { padding: 2rem 0; }
.project-content h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}
.project-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 1rem;
}
.project-content h2:first-child { margin-top: 0; }
.project-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}
.project-content h4,
.project-content h5,
.project-content h6 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}
.project-content p {
  margin-bottom: 0.85rem;
  line-height: 1.65;
}
.project-content ul,
.project-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.project-content li {
  margin-bottom: 0.35rem;
}
.project-content code {
  background: var(--bg-soft);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}
.project-content pre {
  background: #1e2430;
  color: #e6edf3;
  padding: 1rem 1.25rem;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 1rem;
}
.project-content pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: 0.9rem;
}
.project-content a {
  color: var(--accent);
  text-decoration: none;
}
.project-content a:hover {
  text-decoration: underline;
}
.project-content img {
  max-width: 100%;
  height: auto;
}