:root {
  --bg: #090e1a;
  --panel: #10182b;
  --panel-soft: #16233e;
  --text: #e7eeff;
  --muted: #b5bfd8;
  --accent: #6c7dff;
  --accent-2: #2dd4bf;
  --danger: #f87171;
  --ok: #34d399;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: radial-gradient(circle at top right, #172a57, var(--bg) 45%);
  color: var(--text);
  line-height: 1.5;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(9, 14, 26, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(6px);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  min-height: 72px;
}

.logo {
  color: var(--text);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 700;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.main-nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 8px;
  transition: 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: #ffffff;
  background: rgba(108, 125, 255, 0.28);
}

.site-main {
  padding: 32px 0 56px;
}

.section {
  margin-top: 42px;
}

.section h1,
.section h2 {
  margin: 0 0 12px;
}

.section-intro {
  margin-top: 0;
  color: var(--muted);
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: center;
}

.hero h1 {
  margin-top: 0;
  font-size: clamp(1.8rem, 3.1vw, 2.8rem);
}

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

.hero img {
  width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.button {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #ffffff;
  border: 0;
  border-radius: 10px;
  padding: 11px 18px;
  text-decoration: none;
  cursor: pointer;
  font-size: 1rem;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.grid {
  display: grid;
  gap: 18px;
}

.cards-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.gallery-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  padding: 18px;
}

.card h3 {
  margin-top: 0;
}

.gallery-card img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 10px;
}

.gallery-card p {
  font-size: 0.93rem;
}

.contacts-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 18px;
}

.contact-form {
  display: grid;
  gap: 8px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: var(--panel);
  color: var(--text);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
}

.alert {
  margin: 12px 0 20px;
  border-radius: 10px;
  padding: 12px 14px;
  border: 1px solid;
}

.alert.success {
  border-color: rgba(52, 211, 153, 0.5);
  background: rgba(52, 211, 153, 0.16);
}

.alert.error {
  border-color: rgba(248, 113, 113, 0.5);
  background: rgba(248, 113, 113, 0.14);
}

.text-card p:last-child {
  margin-bottom: 0;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(9, 14, 26, 0.9);
}

.footer-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-inner nav {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-inner a {
  color: var(--muted);
  text-decoration: none;
}

.footer-inner a:hover {
  color: #ffffff;
}

@media (max-width: 1024px) {
  .cards-grid,
  .gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .hero,
  .contacts-layout {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-direction: column;
    justify-content: center;
    padding: 10px 0;
  }

  .main-nav {
    justify-content: center;
  }
}

@media (max-width: 560px) {
  .cards-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .site-main {
    padding-top: 20px;
  }
}