@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bd-primary: #2563EB;
  --bd-primary-hover: #1D4ED8;
  --bd-primary-light: #EFF6FF;
  --bd-primary-text: #1E40AF;

  --bd-bg: #FFFFFF;
  --bd-bg-secondary: #F8FAFC;
  --bd-bg-tertiary: #F1F5F9;
  --bd-border: #E2E8F0;
  --bd-border-strong: #CBD5E1;

  --bd-text: #0F172A;
  --bd-text-secondary: #475569;
  --bd-text-tertiary: #94A3B8;

  --bd-success: #16A34A;
  --bd-success-light: #F0FDF4;
  --bd-warning: #B45309;
  --bd-warning-light: #FFFBEB;
  --bd-danger: #DC2626;
  --bd-danger-light: #FEF2F2;

  --bd-radius-sm: 6px;
  --bd-radius-md: 8px;
  --bd-radius-lg: 12px;
  --bd-radius-xl: 16px;
  --bd-radius-full: 9999px;

  --bd-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --bd-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);

  --bd-font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --bd-font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
}

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

body {
  font-family: var(--bd-font);
  background: var(--bd-bg-secondary);
  color: var(--bd-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.bd-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--bd-text);
  line-height: 1.3;
}

.bd-heading {
  font-size: 15px;
  font-weight: 600;
  color: var(--bd-text);
}

.bd-body {
  font-size: 14px;
  font-weight: 400;
  color: var(--bd-text);
  line-height: 1.6;
}

.bd-hint {
  font-size: 12px;
  font-weight: 400;
  color: var(--bd-text-tertiary);
}

.bd-topbar {
  background: var(--bd-bg);
  border-bottom: 1px solid var(--bd-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.bd-topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bd-topbar-left,
.bd-topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bd-topbar-divider {
  width: 1px;
  height: 16px;
  background: var(--bd-border);
}

.bd-back {
  font-size: 13px;
  color: var(--bd-text-secondary);
  text-decoration: none;
}

.bd-back:hover {
  color: var(--bd-text);
}

.bd-main {
  flex: 1;
  padding: 24px;
}

.bd-container {
  max-width: 1100px;
  margin: 0 auto;
}

.bd-footer {
  text-align: center;
  padding: 16px;
  border-top: 1px solid var(--bd-border);
  background: var(--bd-bg);
}

.bd-link {
  color: var(--bd-primary);
  text-decoration: none;
}

.bd-link:hover {
  text-decoration: underline;
}

.bd-hero {
  text-align: center;
  margin-bottom: 32px;
}

.bd-hero-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--bd-text);
  line-height: 1.25;
  margin-bottom: 8px;
}

.bd-hero-subtitle {
  font-size: 15px;
  color: var(--bd-text-secondary);
  line-height: 1.5;
  max-width: 520px;
  margin: 0 auto;
}

.bd-search-wrapper {
  max-width: 480px;
  margin: 0 auto 20px;
}

.bd-input {
  width: 100%;
  height: 40px;
  padding: 0 14px;
  font-family: var(--bd-font);
  font-size: 14px;
  color: var(--bd-text);
  background: var(--bd-bg);
  border: 1px solid var(--bd-border);
  border-radius: var(--bd-radius-md);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

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

.bd-input:focus {
  border-color: var(--bd-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.bd-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.bd-filter-pill {
  background: var(--bd-bg);
  border: 1px solid var(--bd-border);
  color: var(--bd-text-secondary);
  font-family: var(--bd-font);
  font-size: 13px;
  font-weight: 500;
  height: 32px;
  padding: 0 14px;
  border-radius: var(--bd-radius-full);
  cursor: pointer;
  transition: all 0.15s;
}

.bd-filter-pill:hover {
  border-color: var(--bd-border-strong);
  color: var(--bd-text);
}

.bd-filter-pill.active {
  background: var(--bd-primary);
  border-color: var(--bd-primary);
  color: #ffffff;
}

.bd-results-meta {
  margin-bottom: 16px;
}

.bd-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.bd-tool-card {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--bd-border);
  border-radius: var(--bd-radius-lg);
  background: var(--bd-bg);
  overflow: hidden;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.25s;
}

.bd-tool-card:hover:not(.is-disabled) {
  transform: translateY(-4px);
  box-shadow: var(--bd-shadow-md);
  border-color: var(--bd-border-strong);
}

.bd-tool-card.is-disabled {
  cursor: default;
  opacity: 0.72;
}

.bd-tool-card-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--bd-border);
  background: var(--bd-bg-secondary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.bd-tool-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--bd-radius-md);
  background: var(--bd-primary-light);
  color: var(--bd-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}

.bd-tool-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--bd-text);
  line-height: 1.3;
}

.bd-tool-card-body {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bd-tool-card-desc {
  font-size: 13px;
  line-height: 1.55;
  color: var(--bd-text-secondary);
  flex: 1;
}

.bd-tool-card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.bd-badge {
  display: inline-flex;
  align-items: center;
  height: 20px;
  padding: 0 8px;
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--bd-radius-sm);
}

.bd-badge-blue {
  background: var(--bd-primary-light);
  color: var(--bd-primary-text);
}

.bd-badge-green {
  background: var(--bd-success-light);
  color: var(--bd-success);
}

.bd-badge-gray {
  background: var(--bd-bg-tertiary);
  color: var(--bd-text-secondary);
}

.bd-badge-orange {
  background: var(--bd-warning-light);
  color: var(--bd-warning);
}

.bd-empty-state {
  text-align: center;
  padding: 40px 24px;
  background: var(--bd-bg);
  border: 1px dashed var(--bd-border-strong);
  border-radius: var(--bd-radius-lg);
  max-width: 420px;
  margin: 20px auto 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.bd-empty-icon {
  color: var(--bd-text-tertiary);
}

.bd-empty-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--bd-text);
}

@media (max-width: 900px) {
  .bd-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .bd-main {
    padding: 16px;
  }

  .bd-hero-title {
    font-size: 24px;
  }

  .bd-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}