/* AiFresh.ru — дизайн-система для мини-сайта о свежих ИИ-новостях */

:root {
  --color-bg: #07111f;
  --color-bg-soft: #0a1728;
  --color-surface: #0d1b2e;
  --color-surface-2: #112640;
  --color-surface-glass: rgba(13, 27, 46, 0.72);
  --color-text: #eaf4ff;
  --color-muted: #a6bad1;
  --color-muted-2: #7f95ad;
  --color-primary: #39f2ae;
  --color-primary-dark: #16c38a;
  --color-accent: #58c7ff;
  --color-accent-2: #b66cff;
  --color-warning: #ffd166;
  --color-danger: #ff6b8a;
  --color-border: rgba(234, 244, 255, 0.14);
  --color-border-strong: rgba(57, 242, 174, 0.38);
  --shadow-soft: 0 18px 60px rgba(0, 0, 0, 0.30);
  --shadow-card: 0 14px 34px rgba(0, 0, 0, 0.22);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --container: 1160px;
  --space-section: clamp(56px, 8vw, 108px);
  --font-display: "Space Grotesk", "Manrope", "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-sans: "Manrope", "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background:
    radial-gradient(circle at 12% 10%, rgba(88, 199, 255, 0.18), transparent 34%),
    radial-gradient(circle at 86% 12%, rgba(57, 242, 174, 0.14), transparent 30%),
    linear-gradient(180deg, #07111f 0%, #091525 46%, #07111f 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

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

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

p {
  margin: 0 0 1rem;
}

strong {
  color: #ffffff;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #06111e;
  font-weight: 800;
}

.skip-link:focus {
  top: 12px;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--color-border);
  background: rgba(7, 17, 31, 0.86);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.04em;
  font-size: 1.35rem;
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #06111e;
  background:
    linear-gradient(135deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 12px 28px rgba(57, 242, 174, 0.22);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: -0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.site-nav a {
  padding: 9px 12px;
  border-radius: 999px;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--color-text);
  background: rgba(234, 244, 255, 0.08);
}

main {
  position: relative;
  z-index: 1;
}

.hero,
.page-hero {
  padding: clamp(58px, 9vw, 114px) 0 var(--space-section);
}

.hero-grid,
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.hero-badge,
.kicker,
.crumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.crumb {
  color: var(--color-muted);
  text-transform: none;
  letter-spacing: 0;
}

.crumb a {
  color: var(--color-muted);
  border-bottom: 1px solid transparent;
}

.crumb a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  margin: 0;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 820px;
  font-size: clamp(2.55rem, 7vw, 5.8rem);
}

h2 {
  font-size: clamp(2rem, 4.4vw, 3.45rem);
}

h3 {
  font-size: clamp(1.25rem, 2.1vw, 1.7rem);
}

.lead {
  max-width: 720px;
  margin-top: 24px;
  color: var(--color-muted);
  font-size: clamp(1.06rem, 2vw, 1.28rem);
}

.highlight {
  color: var(--color-primary);
  text-shadow: 0 0 28px rgba(57, 242, 174, 0.35);
}

.hero-actions,
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: #06111e;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  font-weight: 900;
  box-shadow: 0 12px 34px rgba(57, 242, 174, 0.18);
}

.btn:hover {
  color: #06111e;
  transform: translateY(-2px);
  box-shadow: 0 18px 42px rgba(88, 199, 255, 0.23);
}

.btn.secondary {
  color: var(--color-text);
  background: rgba(234, 244, 255, 0.06);
  border-color: var(--color-border);
  box-shadow: none;
}

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

.hero-card,
.visual-card,
.callout,
.newsletter-box {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025)),
    var(--color-surface-glass);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.hero-card {
  padding: 20px;
  transform: rotate(1deg);
}

.hero-card img {
  width: 100%;
  border-radius: calc(var(--radius-xl) - 8px);
  background: var(--color-bg-soft);
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 14px;
}

.signal-strip span {
  min-height: 64px;
  padding: 12px;
  border-radius: 18px;
  background: rgba(234, 244, 255, 0.055);
  color: var(--color-muted);
  font-size: 0.82rem;
}

.signal-strip b {
  display: block;
  color: var(--color-text);
  font-family: var(--font-mono);
}

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 38px;
  max-width: 840px;
}

.trust-item {
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(234, 244, 255, 0.045);
}

.trust-item b {
  display: block;
  margin-bottom: 4px;
  color: var(--color-text);
}

.trust-item span {
  color: var(--color-muted);
  font-size: 0.93rem;
}

.section {
  padding: var(--space-section) 0;
}

.section.alt {
  background: linear-gradient(180deg, rgba(17, 38, 64, 0.34), rgba(7, 17, 31, 0));
  border-block: 1px solid rgba(234, 244, 255, 0.06);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 32px;
}

.section-head p {
  max-width: 620px;
  color: var(--color-muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card,
.article-card,
.value-card,
.topic-card {
  position: relative;
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.02)),
    rgba(13, 27, 46, 0.78);
  box-shadow: var(--shadow-card);
}

.card::before,
.topic-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(circle at 18% 0%, rgba(57, 242, 174, 0.12), transparent 32%);
}

.card h3,
.article-card h3,
.value-card h3,
.topic-card h3 {
  margin-bottom: 12px;
}

.card p,
.article-card p,
.value-card p,
.topic-card p,
.checklist li,
.timeline p {
  color: var(--color-muted);
}

.tag {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 16px;
  padding: 5px 10px;
  border: 1px solid rgba(57, 242, 174, 0.28);
  border-radius: 999px;
  color: var(--color-primary);
  background: rgba(57, 242, 174, 0.08);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
}

.card-link {
  display: inline-flex;
  margin-top: 12px;
  font-weight: 900;
}

.topic-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 18px;
  align-items: stretch;
}

.visual-card {
  padding: 22px;
}

.visual-card img {
  min-height: 320px;
  object-fit: cover;
  border-radius: calc(var(--radius-xl) - 10px);
}

.topic-list {
  display: grid;
  gap: 14px;
}

.topic-card {
  min-height: auto;
}

.list-clean {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
}

.list-clean li {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
  color: var(--color-muted);
}

.list-clean li::before {
  content: "✦";
  color: var(--color-primary);
}

.callout {
  padding: clamp(24px, 4vw, 42px);
}

.callout h2 {
  max-width: 780px;
}

.callout p {
  max-width: 780px;
  color: var(--color-muted);
  margin-top: 16px;
}

.article-list {
  display: grid;
  gap: 18px;
}

.article-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
}

.article-number {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #06111e;
  background: var(--color-primary);
  font-family: var(--font-mono);
  font-weight: 900;
}

.timeline {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.timeline-item {
  position: relative;
  padding: 22px 22px 22px 66px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(234, 244, 255, 0.045);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 25px;
  width: 18px;
  height: 18px;
  border: 4px solid rgba(57, 242, 174, 0.25);
  border-radius: 50%;
  background: var(--color-primary);
}

.checklist {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.checklist li {
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(234, 244, 255, 0.045);
}

.newsletter-box {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  align-items: center;
  padding: clamp(24px, 4vw, 42px);
}

.newsletter-box p {
  color: var(--color-muted);
}

.footer {
  position: relative;
  z-index: 1;
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
  background: rgba(5, 12, 22, 0.62);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
  align-items: start;
}

.footer p,
.footer a,
.footer small {
  color: var(--color-muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

.footer-nav a {
  padding: 6px 0;
}

.microcopy {
  margin-top: 22px;
  color: var(--color-muted-2);
  font-size: 0.9rem;
}

@media (max-width: 920px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
    gap: 12px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero-grid,
  .split,
  .topic-grid,
  .footer-grid,
  .newsletter-box {
    grid-template-columns: 1fr;
  }

  .cards {
    grid-template-columns: 1fr 1fr;
  }

  .section-head {
    display: block;
  }

  .section-head p {
    margin-top: 14px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .container {
    width: min(100% - 22px, var(--container));
  }

  .site-nav a {
    padding: 8px 9px;
    font-size: 0.9rem;
  }

  .hero,
  .page-hero {
    padding-top: 40px;
  }

  .hero-actions,
  .cta-row {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .trust-row,
  .cards,
  .checklist {
    grid-template-columns: 1fr;
  }

  .signal-strip {
    grid-template-columns: 1fr;
  }

  .article-card {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    justify-content: flex-start;
  }
}