/* ====== Дизайн-токены ====== */
:root {
  --bg: #0b0c0f;
  --elev-1: #12141a;
  --elev-2: #171a21;
  --text: #eef1f7;
  --muted: #a7b0c3;
  --brand: #7bdcff;
  --accent: #7affb3;
  --danger: #ff6b6b;
  --ring: #88e0ff;
  --card: #10131a;
  --border: #222632;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --maxw: 1200px;
}

/* ====== Базовые стили / reset ====== */
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(
      1200px 600px at 20% -10%,
      rgba(122, 255, 179, 0.06),
      transparent 60%
    ),
    radial-gradient(
      900px 500px at 100% 0,
      rgba(123, 220, 255, 0.06),
      transparent 60%
    ),
    var(--bg);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Inter,
    'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
  line-height: 1.55;
  letter-spacing: 0.2px;
  font-size: 16px;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--brand);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
/* важное: цвет посещённых ссылок, чтобы не было фиолетовых */
a:visited {
  color: var(--brand);
}
h1,
h2,
h3 {
  margin: 0 0 0.6em;
}
p {
  margin: 0.6em 0;
}
ul {
  margin: 0.4em 0;
  padding-left: 1.1em;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: -9999px;
}
.skip-link:focus {
  left: 12px;
  top: 12px;
  background: var(--brand);
  color: #002;
  padding: 8px 12px;
  border-radius: 8px;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}
.section {
  padding: 60px 0;
}
.muted {
  color: var(--muted);
}
.hidden {
  display: none !important;
}

/* ====== Header ====== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(11, 12, 15, 0.6);
  border-bottom: 1px solid var(--border);
}
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}
.brand-title {
  letter-spacing: 0.4px;
}
.main-nav {
  display: flex;
  gap: 16px;
}
.main-nav a {
  padding: 10px 12px;
  border-radius: 10px;
}
.main-nav a:hover {
  background: var(--elev-2);
  text-decoration: none;
}

.controls {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 12px 20px 16px;
}
.search {
  position: relative;
  display: block;
}
.search input {
  width: 100%;
  padding: 14px 44px 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--elev-1);
  color: var(--text);
  outline: none;
}
.search input:focus {
  box-shadow: 0 0 0 3px var(--ring);
  border-color: transparent;
}
.search .ghost {
  position: absolute;
  right: 6px;
  top: 6px;
  height: 36px;
  width: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--elev-2);
  color: var(--muted);
  cursor: pointer;
}
.search .ghost:hover {
  color: var(--text);
}

.control-group {
  display: flex;
  gap: 10px;
}
.control-group select {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--elev-1);
  color: var(--text);
}
.control-group select:focus {
  box-shadow: 0 0 0 3px var(--ring);
  border-color: transparent;
}

/* ====== Catalog ====== */
.catalog {
  padding: 28px 0 64px;
}
.catalog-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.catalog-meta {
  color: var(--muted);
}
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}
.card {
  grid-column: span 4;
  background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.02),
      rgba(255, 255, 255, 0) 40%
    ),
    var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-2px);
  border-color: rgba(123, 220, 255, 0.3);
}
.card-media {
  aspect-ratio: 16/10;
  background: #0f131b;
  display: grid;
  place-items: center;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card-body {
  padding: 14px 16px 16px;
  display: grid;
  gap: 8px;
}
.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.card-sub {
  color: var(--muted);
  font-size: 0.92rem;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  font-size: 0.82rem;
  padding: 6px 10px;
  background: var(--elev-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
}
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 16px;
  gap: 10px;
}

/* кнопки */
.btn {
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--brand);
  color: #003;
  border: none;
  font-weight: 700;
  cursor: pointer;
}
.btn:hover {
  filter: brightness(1.04);
}
.btn.secondary {
  background: var(--accent);
}
.price {
  font-weight: 800;
  letter-spacing: 0.3px;
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 24px;
}

/* ====== Dialog ====== */
dialog {
  width: min(100% - 24px, 980px);
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--elev-1);
  color: var(--text);
  box-shadow: var(--shadow);
}
dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
}
.dialog-close {
  position: absolute;
  right: 10px;
  top: 10px;
  height: 38px;
  width: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--elev-2);
  color: var(--muted);
  cursor: pointer;
}
.dialog-body {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
  padding: 18px;
}
.dialog-media {
  background: #0f131b;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.dialog-content {
  display: grid;
  align-content: start;
  gap: 12px;
}
.specs {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 14px;
  font-size: 0.95rem;
}
.specs dt {
  color: var(--muted);
}

/* ====== Footer ====== */
.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(10, 12, 14, 0.6);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 64px;
}
.to-top {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--elev-2);
  color: var(--muted);
  text-decoration: none;
}
.to-top:hover {
  color: var(--text);
}

/* ====== Responsive ====== */
@media (max-width: 1100px) {
  .card {
    grid-column: span 6;
  }
  .dialog-body {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 680px) {
  .controls {
    grid-template-columns: 1fr;
  }
  .main-nav {
    display: none;
  }
  .card {
    grid-column: span 12;
  }
  .catalog-head {
    flex-direction: column;
    align-items: start;
  }
}