/* RusiLabs Design System - static.rusilabs.com */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Dark Theme Default */
  --bg-color: #09090b;
  --surface-bg: #121216;
  --surface-hover: #18181f;
  --border-color: #22222b;
  --border-muted: #1a1a22;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --accent-cyan: #38bdf8;
  --accent-green: #34d399;
  --accent-blue: #60a5fa;
  --accent-purple: #c084fc;
  --accent-amber: #fbbf24;

  --card-inner-bg: #0d0d10;
  --input-bg: #0d0d10;
  --badge-bg: #1a1a22;
  --badge-border: #2a2a38;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
}

[data-theme="light"] {
  --bg-color: #f8fafc;
  --surface-bg: #ffffff;
  --surface-hover: #f1f5f9;
  --border-color: #e2e8f0;
  --border-muted: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --accent-cyan: #0284c7;
  --accent-green: #059669;
  --accent-blue: #2563eb;
  --accent-purple: #9333ea;
  --accent-amber: #d97706;

  --card-inner-bg: #f8fafc;
  --input-bg: #ffffff;
  --badge-bg: #f1f5f9;
  --badge-border: #cbd5e1;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.25s ease, color 0.25s ease;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Layout */
.app-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-color);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  background: #ffffff;
  color: #000000;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
}

[data-theme="light"] .brand-icon {
  background: #0f172a;
  color: #ffffff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-links a {
  transition: color 0.2s;
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -21px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--text-primary);
}

.theme-toggle-btn {
  background: var(--surface-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
  background: var(--surface-hover);
  border-color: var(--text-muted);
}

/* Hero Section */
.hero-section {
  padding: 3.5rem 0 2rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.25rem;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 650px;
  line-height: 1.6;
}

/* Filter & Search Bar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-chip {
  background: var(--surface-bg);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.45rem 1rem;
  border-radius: 6px;
  font-size: 0.825rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-chip:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.filter-chip.active {
  background: var(--text-primary);
  color: var(--bg-color);
  border-color: var(--text-primary);
  font-weight: 600;
}

.search-box {
  position: relative;
  min-width: 260px;
}

.search-input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 2.5rem 0.5rem 2.25rem;
  border-radius: 6px;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.search-input:focus {
  border-color: var(--accent-cyan);
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 14px;
  height: 14px;
}

.shortcut-badge {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--text-muted);
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: monospace;
}

.meta-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 1.25rem 0;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.tool-card {
  background-color: var(--surface-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
  color: inherit;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--text-muted);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.badge-tag {
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.55rem;
  border-radius: 4px;
}

.status-pill {
  font-size: 0.725rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.status-pill.green {
  background: rgba(52, 211, 153, 0.1);
  color: var(--accent-green);
  border: 1px solid rgba(52, 211, 153, 0.25);
}

.status-pill.cyan {
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.status-pill.blue {
  background: rgba(96, 165, 250, 0.1);
  color: var(--accent-blue);
  border: 1px solid rgba(96, 165, 250, 0.25);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.metric-box {
  background-color: var(--card-inner-bg);
  border: 1px solid var(--border-muted);
  border-radius: 6px;
  padding: 0.85rem 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.8rem;
}

.metric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.metric-label {
  color: var(--text-muted);
  font-size: 0.675rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-value {
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0.2rem;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-muted);
  font-size: 0.775rem;
  color: var(--text-muted);
}

.action-link {
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: gap 0.2s ease;
}

.tool-card:hover .action-link {
  gap: 0.55rem;
  color: var(--accent-cyan);
}

/* Stats Section */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--surface-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
}

.stat-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.stat-val {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.stat-sub {
  font-size: 0.775rem;
  color: var(--accent-green);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* Ad Banner */
.ad-banner {
  background: var(--surface-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.ad-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.ad-badge {
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--text-muted);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.ad-text strong {
  color: var(--text-primary);
  font-size: 0.9rem;
  display: block;

}

.ad-text span {
  color: var(--text-secondary);
  font-size: 0.825rem;
}

.btn-secondary {
  background: var(--badge-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.825rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--text-muted);
}

/* Sub-footer Status */
.sub-footer-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  margin-bottom: 2.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.engine-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.engine-status .dot {
  width: 7px;
  height: 7px;
  background-color: var(--accent-green);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--accent-green);
}

.status-links {
  display: flex;
  gap: 1.25rem;
}

.status-links a:hover {
  color: var(--text-primary);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-top: auto;
  font-size: 0.825rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.operational-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-green);
  font-weight: 500;
}

/* Utilities */
.hidden {
  display: none !important;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .search-box {
    width: 100%;
  }
}