:root {
  --asphalt: #2b3038;
  --asphalt-light: #353b45;
  --asphalt-card: #3a414c;
  --asphalt-deep: #1e2228;
  --purple: #9d4edd;
  --purple-glow: #c77dff;
  --yellow: #ffd60a;
  --yellow-dim: #e6c200;
  --text: #e8eaed;
  --text-muted: #9aa0a8;
  --ok: #4ade80;
  --warn: #fb923c;
  --err: #f87171;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --font-display: "Exo 2", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  background: var(--asphalt-deep);
  color: var(--text);
  line-height: 1.5;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(157, 78, 221, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 90% 80%, rgba(255, 214, 10, 0.06), transparent),
    linear-gradient(165deg, #252a32 0%, var(--asphalt) 40%, #323842 100%);
  pointer-events: none;
  z-index: 0;
}

.header,
.layout,
.presets-section,
.footer {
  position: relative;
  z-index: 1;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid rgba(157, 78, 221, 0.25);
  background: rgba(30, 34, 40, 0.85);
  backdrop-filter: blur(12px);
  animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.logo-block {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, var(--purple-glow), var(--yellow));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 20px rgba(157, 78, 221, 0.4));
}

.logo-text h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo-text p {
  margin: 0.15rem 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-stats {
  display: flex;
  gap: 0.75rem;
}

.stat-pill {
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  background: var(--asphalt-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-pill.accent {
  border-color: rgba(255, 214, 10, 0.35);
  box-shadow: 0 0 20px rgba(255, 214, 10, 0.1);
}

.stat-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.stat-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--yellow);
}

/* Layout */
.layout {
  display: grid;
  grid-template-columns: 220px 1fr 300px;
  gap: 1rem;
  padding: 1rem 1.25rem 2rem;
  max-width: 1600px;
  margin: 0 auto;
  min-height: calc(100vh - 140px);
}

@media (max-width: 1200px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .sidebar,
  .summary-panel {
    order: -1;
  }
}

/* Sidebar */
.sidebar {
  background: rgba(58, 65, 76, 0.6);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 0.75rem;
  height: fit-content;
  position: sticky;
  top: 1rem;
  animation: fadeIn 0.5s 0.1s both;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.category-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--purple), var(--yellow), transparent);
  margin: 0.75rem 0;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.15s;
}

.nav-btn:hover {
  background: rgba(157, 78, 221, 0.15);
  color: var(--text);
}

.nav-btn.active {
  background: linear-gradient(90deg, rgba(157, 78, 221, 0.35), rgba(255, 214, 10, 0.12));
  color: var(--text);
  border-left: 3px solid var(--yellow);
  padding-left: calc(0.65rem - 3px);
}

.nav-btn .badge {
  margin-left: auto;
  font-size: 0.65rem;
  background: var(--purple);
  color: #fff;
  padding: 0.1rem 0.4rem;
  border-radius: 99px;
  min-width: 1.2rem;
  text-align: center;
}

/* Catalog */
.catalog-panel {
  background: rgba(58, 65, 76, 0.45);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.04);
  padding: 1rem;
  min-height: 400px;
  animation: fadeIn 0.5s 0.2s both;
}

.catalog-toolbar h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
}

.toolbar-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.category-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.toolbar-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.search-wrap {
  flex: 1;
  min-width: 180px;
}

.search-wrap input,
.toolbar-controls select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: var(--asphalt-deep);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.85rem;
}

.toolbar-controls select {
  width: auto;
  min-width: 160px;
  cursor: pointer;
}

.filters-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.filter-chip {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.filter-chip select {
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  border: 1px solid rgba(157, 78, 221, 0.3);
  background: var(--asphalt-deep);
  color: var(--text);
  font-size: 0.75rem;
}

.btn-ghost,
.btn-primary,
.btn-outline {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s;
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-muted);
}

.btn-ghost:hover {
  border-color: var(--purple);
  color: var(--text);
}

.tiles-pager {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.tiles-pager[hidden] {
  display: none;
}

.tiles-pager .pager-info {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.tiles-pager button {
  font-family: var(--font-body);
  font-size: 0.8rem;
  padding: 0.4rem 0.85rem;
  border-radius: 8px;
  border: 1px solid rgba(157, 78, 221, 0.35);
  background: var(--asphalt-deep);
  color: var(--text);
  cursor: pointer;
}

.tiles-pager button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Tiles */
.tiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.tile {
  position: relative;
  background: var(--asphalt-card);
  border: 2px solid transparent;
  border-radius: var(--radius);
  padding: 0.85rem;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s, opacity 0.25s;
  animation: tileIn 0.35s ease-out both;
}

@keyframes tileIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.tile:hover:not(.incompatible) {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(157, 78, 221, 0.5);
}

.tile.selected {
  border-color: var(--yellow);
  box-shadow: 0 0 24px rgba(255, 214, 10, 0.2);
}

.tile.incompatible {
  opacity: 0.38;
  cursor: not-allowed;
  filter: grayscale(0.4);
}

.tile.incompatible::after {
  content: "Несовместимо";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--err);
  background: rgba(30, 34, 40, 0.9);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  pointer-events: none;
}

.tile-check {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: background 0.2s, border-color 0.2s;
}

.tile.selected .tile-check {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--asphalt-deep);
}

.tile-img-wrap {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
  background: rgba(30, 34, 40, 0.5);
  border-radius: 8px;
  overflow: hidden;
}

.tile-img {
  max-width: 100%;
  max-height: 88px;
  object-fit: contain;
  transition: transform 0.25s ease;
}

.tile:hover:not(.incompatible) .tile-img {
  transform: scale(1.04);
}

.tile-brand {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--purple-glow);
  margin-bottom: 0.25rem;
}

.tile-name {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  padding-right: 1.5rem;
}

.tile-specs {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.tile-price {
  margin-top: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--yellow);
  font-size: 0.95rem;
}

.tile-compat-ok {
  display: inline-block;
  margin-top: 0.35rem;
  font-size: 0.65rem;
  color: var(--ok);
}

/* Summary */
.summary-panel {
  background: rgba(58, 65, 76, 0.65);
  border-radius: var(--radius);
  border: 1px solid rgba(157, 78, 221, 0.2);
  padding: 1rem;
  height: fit-content;
  position: sticky;
  top: 1rem;
  animation: fadeIn 0.5s 0.3s both;
}

.summary-header h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.compat-badge {
  display: inline-block;
  font-size: 0.72rem;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  background: rgba(74, 222, 128, 0.15);
  color: var(--ok);
  margin-bottom: 0.75rem;
}

.compat-badge.warn {
  background: rgba(251, 146, 60, 0.15);
  color: var(--warn);
}

.compat-badge.err {
  background: rgba(248, 113, 113, 0.15);
  color: var(--err);
}

.summary-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  max-height: 50vh;
  overflow-y: auto;
}

.summary-list li {
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.78rem;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  animation: slideItem 0.3s ease-out;
}

@keyframes slideItem {
  from {
    opacity: 0;
    transform: translateX(8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.summary-list .item-name {
  color: var(--text);
  flex: 1;
}

.summary-list .item-price {
  color: var(--yellow);
  font-weight: 600;
  white-space: nowrap;
}

.summary-list .empty-hint {
  color: var(--text-muted);
  font-style: italic;
}

.summary-totals .total-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 0.35rem 0;
}

.summary-totals .total-row.grand {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(255, 214, 10, 0.3);
}

.summary-totals .total-row.grand strong {
  color: var(--yellow);
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.price-note {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin: 0.5rem 0 1rem;
}

.btn-primary {
  width: 100%;
  margin-bottom: 0.5rem;
  border: none;
  background: linear-gradient(135deg, var(--purple), #7b2cbf);
  color: #fff;
  box-shadow: 0 4px 20px rgba(157, 78, 221, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(157, 78, 221, 0.45);
}

.btn-outline {
  width: 100%;
  background: transparent;
  border: 1px solid rgba(255, 214, 10, 0.4);
  color: var(--yellow);
}

.btn-outline:hover {
  background: rgba(255, 214, 10, 0.08);
}

/* Presets */
.presets-section {
  max-width: 1600px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.presets-section h2 {
  font-family: var(--font-display);
  text-align: center;
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
}

.presets-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0 0 1.5rem;
}

.presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.preset-card {
  background: var(--asphalt-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1.25rem;
  cursor: pointer;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
  overflow: hidden;
  position: relative;
}

.preset-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--purple), var(--yellow));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s;
}

.preset-card:hover {
  transform: translateY(-4px);
  border-color: rgba(157, 78, 221, 0.4);
  box-shadow: var(--shadow);
}

.preset-card:hover::before {
  transform: scaleX(1);
}

.preset-tag {
  display: inline-block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--purple-glow);
  margin-bottom: 0.5rem;
}

.preset-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.preset-card p {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.preset-price {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--yellow);
  font-size: 1.15rem;
}

/* Footer */
.footer {
  display: flex;
  justify-content: space-between;
  padding: 1rem 2rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--asphalt-card);
  border: 1px solid var(--purple);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  opacity: 0;
  transition: transform 0.35s, opacity 0.35s;
  z-index: 100;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}