/* itimpulse.ru — портфолио, минималистичный инженерный стиль */

:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --card-bg: #fff;
  --font-sans: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --max-w: 720px;
  --space: 1.5rem;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  position: relative;
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -3rem;
  left: var(--space);
  padding: 0.5rem 0.75rem;
  background: var(--fg);
  color: var(--bg);
  font-size: 0.9rem;
  z-index: 100;
  border-radius: var(--radius);
  transition: top 0.15s ease;
}
.skip-link:focus {
  top: var(--space);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

/* Header */
.header {
  padding: var(--space) 0;
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header .site-title {
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--fg);
}
.header .site-title:hover {
  text-decoration: none;
  color: var(--fg);
}
.lang-switch {
  display: flex;
  gap: 0.5rem;
}
.lang-switch a {
  color: var(--muted);
  font-size: 0.9rem;
}
.lang-switch a.active {
  color: var(--fg);
  font-weight: 500;
}

/* Hero */
.hero {
  padding: 3rem 0;
}
.hero h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.3;
}
.hero .subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

/* Cards */
.projects-grid {
  display: grid;
  gap: var(--space);
  padding-bottom: 3rem;
}
.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space);
  transition: border-color 0.15s ease;
}
.project-card:hover {
  border-color: var(--muted);
}
.project-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
}
.project-card .tagline {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.project-card .card-links {
  margin: 0;
  font-size: 0.9rem;
}
.project-card .link {
  font-weight: 500;
}
.project-card .link-external::after {
  content: " ↗";
  font-size: 0.85em;
}
.muted {
  color: var(--muted);
}

/* Project page */
.project-page {
  padding: var(--space) 0 3rem;
}
.project-page .back {
  margin-bottom: var(--space);
  font-size: 0.9rem;
}
.project-page h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 600;
}
.project-page .tagline {
  margin: 0 0 2rem;
  color: var(--muted);
  font-size: 1rem;
}
.project-page section {
  margin-bottom: 2rem;
}
.project-page section h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.project-page section p,
.project-page section .block {
  margin: 0 0 0.5rem;
}
.project-page ul.capabilities,
.project-page ul.highlights {
  margin: 0;
  padding-left: 1.25rem;
}
.project-page ul.capabilities li,
.project-page section ul:not(.integrations) li {
  margin-bottom: 0.35rem;
}
.integrations {
  list-style: none;
  padding: 0;
  margin: 0;
}
.integrations li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  gap: 0.5rem;
}
.integrations li:last-child {
  border-bottom: none;
}
.integrations .name {
  font-weight: 500;
}
.integrations .role {
  font-size: 0.9rem;
  color: var(--muted);
}
.tech-wrap {
  margin-top: 0.75rem;
}
.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}
.tech-badges li {
  padding: 0.2rem 0.5rem;
  background: var(--border);
  border-radius: 4px;
  margin: 0;
}
.project-links {
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
}
.about,
.cta {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
}
.about h2,
.cta h2 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.about p,
.cta p {
  margin: 0;
}
.tech {
  font-size: 0.9rem;
  color: var(--muted);
}

/* Блоки «Что мы улучшили» (продающий текст) */
.improvement-block {
  margin-bottom: 1.5rem;
}
.improvement-block h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
}
.improvement-block p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--fg);
}