:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: #1f2937;
  --border: #374151;
  --border-focus: #6366f1;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --dev-badge: #3b82f6;
  --comercial-badge: #10b981;
  --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;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Header */
header {
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 0 2rem;
  background: radial-gradient(circle at top center, #1e1b4b 0%, var(--bg-primary) 70%);
}

.header-content {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.logo-badge {
  font-size: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  width: 4.5rem;
  height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.header-text h1 {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}

.header-text p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: 0.25rem;
}

/* Controls (Tabs + Search) */
.controls-bar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 2rem 0;
}

@media (min-width: 640px) {
  .controls-bar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.tabs {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-secondary);
  padding: 0.35rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

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

.tab-btn.active {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.search-box {
  position: relative;
  width: 100%;
  max-width: 320px;
}

.search-input {
  width: 100%;
  padding: 0.6rem 1rem 0.6rem 2.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.15s;
}

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

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Artifacts Grid */
.artifacts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.artifact-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.artifact-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.15);
}

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

.badges-group {
  display: flex;
  gap: 0.5rem;
}

.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-dev {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-comercial {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.card-date {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.card-summary {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  font-size: 0.875rem;
}

.card-author {
  color: var(--text-muted);
}

.card-cta {
  color: var(--accent);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.artifact-card:hover .card-cta {
  color: #818cf8;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* Footer */
footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

footer a {
  color: var(--accent);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}