/* ── Material Design — helpfull-tools catalog ────────────── */

:root {
  /* Colors (Indigo + Pink accent) */
  --md-primary: #3f51b5;
  --md-primary-dark: #303f9f;
  --md-primary-light: #c5cae9;
  --md-accent: #ff4081;
  --md-surface: #ffffff;
  --md-background: #f5f5f5;
  --md-text-primary: #212121;
  --md-text-secondary: #757575;
  --md-text-hint: #9e9e9e;
  --md-divider: #e0e0e0;
  --md-elevation-1: 0 2px 4px -1px rgba(0, 0, 0, 0.2),
    0 1px 10px 0 rgba(0, 0, 0, 0.12), 0 4px 5px 0 rgba(0, 0, 0, 0.14);
  --md-elevation-2: 0 3px 5px -1px rgba(0, 0, 0, 0.2),
    0 6px 10px 0 rgba(0, 0, 0, 0.14), 0 1px 18px 0 rgba(0, 0, 0, 0.12);
  --md-elevation-4: 0 2px 4px -1px rgba(0, 0, 0, 0.2),
    0 4px 5px 0 rgba(0, 0, 0, 0.14), 0 1px 10px 0 rgba(0, 0, 0, 0.12);
  --md-radius: 8px;
  --md-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Typography ─────────────────────────────────── */

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, Roboto, 'Helvetica Neue',
    Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--md-text-primary);
  background: var(--md-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 500;
  line-height: 1.3;
}

/* ── Header ─────────────────────────────────────── */

.site-header {
  background: linear-gradient(135deg, var(--md-primary-dark), var(--md-primary));
  color: #fff;
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--md-elevation-4);
}

.site-header h1 {
  font-size: 28px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 6px;
}

.site-header .subtitle {
  font-size: 15px;
  opacity: 0.85;
  margin-bottom: 16px;
  font-weight: 400;
}

.site-header .header-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #fff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 16px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 20px;
  transition: background var(--md-transition);
}

.site-header .header-link:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* ── Tool count badge ───────────────────────────── */

.tool-count {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 500;
  margin-top: 8px;
}

/* ── Main grid ──────────────────────────────────── */

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

/* ── Tool card ──────────────────────────────────── */

.tool-card {
  background: var(--md-surface);
  border-radius: var(--md-radius);
  box-shadow: var(--md-elevation-1);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--md-transition), transform var(--md-transition);
}

.tool-card:hover {
  box-shadow: var(--md-elevation-2);
  transform: translateY(-2px);
}

/* ── Card icon (first letter avatar) ────────────── */

.tool-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.tool-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  flex-shrink: 0;
  text-transform: uppercase;
}

.tool-name {
  font-size: 18px;
  font-weight: 500;
  color: var(--md-text-primary);
}

/* ── Card description ───────────────────────────── */

.tool-description {
  color: var(--md-text-secondary);
  font-size: 13.5px;
  line-height: 1.55;
  flex-grow: 1;
  margin-bottom: 16px;
}

/* ── Language badges ────────────────────────────── */

.tool-languages {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.lang-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--md-primary-light);
  color: var(--md-primary-dark);
  letter-spacing: 0.01em;
}

.lang-badge.python {
  background: #e8f5e9;
  color: #2e7d32;
}

.lang-badge.bash,
.lang-badge.shell {
  background: #fff3e0;
  color: #e65100;
}

.lang-badge.yaml,
.lang-badge.yml {
  background: #e0f2f1;
  color: #00695c;
}

.lang-badge.config {
  background: #ede7f6;
  color: #4527a0;
}

.lang-badge.dockerfile {
  background: #e3f2fd;
  color: #1565c0;
}

/* ── Card actions ───────────────────────────────── */

.tool-actions {
  margin-top: auto;
}

.tool-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--md-primary);
  text-decoration: none;
  padding: 4px 0;
  position: relative;
  transition: color var(--md-transition);
}

.tool-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--md-primary);
  transition: width var(--md-transition);
}

.tool-link:hover {
  color: var(--md-primary-dark);
}

.tool-link:hover::after {
  width: 100%;
}

.tool-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* ── Footer ─────────────────────────────────────── */

.site-footer {
  text-align: center;
  padding: 24px 16px;
  color: var(--md-text-hint);
  font-size: 12px;
  border-top: 1px solid var(--md-divider);
}

.site-footer a {
  color: var(--md-primary);
  text-decoration: none;
}

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

/* ── Empty state ────────────────────────────────── */

.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--md-text-hint);
}

.empty-state h2 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--md-text-secondary);
}

/* ── Loading / generated timestamp ─────────────── */

.generated-info {
  text-align: center;
  font-size: 12px;
  color: var(--md-text-hint);
  margin-top: 24px;
  padding: 0 16px;
}

/* ── Responsive ─────────────────────────────────── */

@media (max-width: 600px) {
  .site-header {
    padding: 24px 16px;
  }

  .site-header h1 {
    font-size: 22px;
  }

  main {
    padding: 16px 12px 32px;
  }

  .tools-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .tool-card {
    padding: 18px;
  }
}