:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  padding: 0;
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Hero */
header {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.5) 0%, transparent 100%);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 0 1.5rem;
  backdrop-filter: blur(12px);
}

.hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 800px;
}

/* Stats Metrics Bar */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 0.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
}

.stat-val {
  font-size: 1.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: #fff;
}

.stat-label {
  font-size: 0.825rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

/* Navigation Tabs */
.tabs-nav {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
  margin-top: 2rem;
  overflow-x: auto;
  padding-bottom: 2px;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

.tab-btn .badge-count {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
}

/* Controls & Filter Bar */
.controls-bar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.search-input-wrap {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.85rem 1.25rem 0.85rem 2.75rem;
  color: #fff;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.search-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.filter-group-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 8px;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.pill-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.pill-btn.active {
  background: rgba(6, 182, 212, 0.2);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* App Grid & Cards */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  backdrop-filter: blur(8px);
}

.app-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.app-title-group {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.app-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  transition: color 0.15s ease;
}

.app-name:hover {
  color: var(--accent-cyan);
}

.app-category {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.platform-badges {
  display: flex;
  gap: 0.35rem;
}

.platform-tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  text-transform: uppercase;
}

.platform-tag.mac { background: rgba(6, 182, 212, 0.15); color: #22d3ee; border: 1px solid rgba(6, 182, 212, 0.3); }
.platform-tag.linux { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.platform-tag.win { background: rgba(59, 130, 246, 0.15); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.3); }

.verdict-banner {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  margin: 0.75rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.verdict-banner.best {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.verdict-banner.replacement {
  background: rgba(244, 63, 94, 0.12);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.25);
}

.verdict-banner.conditional {
  background: rgba(245, 158, 11, 0.12);
  color: #fcd34d;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.app-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  flex-grow: 1;
}

/* Replacements Section Inside Card */
.replacements-box {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 0.85rem;
  margin-top: auto;
}

.replacements-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.replacement-item {
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
}

.replacement-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.replacement-name {
  font-weight: 600;
  color: #38bdf8;
  text-decoration: none;
}

.replacement-name:hover {
  text-decoration: underline;
}

.replacement-reason {
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin-top: 0.2rem;
}

/* Gems Card */
.gem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.gem-card .install-snippet {
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 0.6rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #a7f3d0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
}

.copy-btn {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  border-radius: 4px;
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  cursor: pointer;
  transition: background 0.15s;
}

.copy-btn:hover {
  background: var(--accent-cyan);
}

/* Blueprint Architecture View */
.stack-blueprint {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem;
  margin-bottom: 2rem;
}

.stack-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stack-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.9rem;
}

.stack-table th, .stack-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.stack-table th {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stack-table td {
  color: var(--text-primary);
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
  .apps-grid {
    grid-template-columns: 1fr;
  }
  .filter-group-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-title {
    font-size: 1.75rem;
  }
}