*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-page:        #1a1a1a;
  --bg-primary:     #242424;
  --bg-secondary:   #2e2e2e;
  --bg-hover:       #333333;

  --text-primary:   #e8e6e1;
  --text-secondary: #a09e99;
  --text-tertiary:  #6b6966;

  --border-faint:   rgba(255,255,255,0.08);
  --border-subtle:  rgba(255,255,255,0.14);
  --border-strong:  rgba(255,255,255,0.28);

  --radius-sm:  6px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-pill: 20px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Badge barvy */
  --intel-bg:     #1a2e44;
  --intel-text:   #6aafe6;
  --intel-border: #2a5a8a;

  --amd-bg:       #3a1a0e;
  --amd-text:     #e0724a;
  --amd-border:   #7a3010;

  --nvidia-bg:    #1a2e10;
  --nvidia-text:  #76b83a;
  --nvidia-border:#3a6018;
}

/* ── Základní layout ─────────────────────────────────── */
body {
  font-family: var(--font);
  background: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  padding: 2rem 1rem;
}

.container {
  max-width: 720px;
  margin: 0 auto;
}

h1 {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

/* ── Záložky kategorie ───────────────────────────────── */
.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.tab {
  padding: 6px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.tab:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.tab.active {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-strong);
  font-weight: 500;
}

/* ── Vyhledávání ─────────────────────────────────────── */
.search {
  width: 100%;
  padding: 9px 13px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 13px;
  margin-bottom: 1rem;
  outline: none;
  transition: border-color 0.15s;
}

.search::placeholder {
  color: var(--text-tertiary);
}

.search:focus {
  border-color: var(--border-strong);
}

/* ── Seznam karet ────────────────────────────────────── */
.gen-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ── Karta generace ──────────────────────────────────── */
.gen-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-faint);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.gen-card:hover {
  border-color: var(--border-subtle);
  background: var(--bg-hover);
}

.gen-card.expanded {
  border-color: var(--border-strong);
}

/* ── Hlavička karty ──────────────────────────────────── */
.gen-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.gen-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  flex: 1;
}

.gen-year {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.gen-node {
  font-size: 12px;
  color: var(--text-tertiary);
  white-space: nowrap;
}

.arrow {
  font-size: 11px;
  color: var(--text-tertiary);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.gen-card.expanded .arrow {
  transform: rotate(90deg);
}

/* ── Badge (Intel / AMD / NVIDIA) ────────────────────── */
.gen-badge {
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  white-space: nowrap;
}

.intel-badge {
  background: var(--intel-bg);
  color: var(--intel-text);
  border-color: var(--intel-border);
}

.amd-badge {
  background: var(--amd-bg);
  color: var(--amd-text);
  border-color: var(--amd-border);
}

.nvidia-badge {
  background: var(--nvidia-bg);
  color: var(--nvidia-text);
  border-color: var(--nvidia-border);
}

/* ── Popis pod hlavičkou ─────────────────────────────── */
.gen-tagline {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
  line-height: 1.6;
}

/* ── Rozbalený detail ────────────────────────────────── */
.gen-detail {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-faint);
  display: none;
}

.gen-card.expanded .gen-detail {
  display: block;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}

.detail-item {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 8px 10px;
}

.detail-label {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-bottom: 3px;
}

.detail-val {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
}

/* ── Tech tagy ───────────────────────────────────────── */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 8px;
}

.tech-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-faint);
}

/* ── Responzivita ────────────────────────────────────── */
@media (max-width: 480px) {
  body {
    padding: 1rem 0.75rem;
  }

  .gen-node {
    display: none;
  }

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