/* CalcRig — Professional Trade Calculators */
:root {
  --cr-dark: #1a1a2e;
  --cr-mid: #16213e;
  --cr-accent: #e67e22;
  --cr-accent-hover: #d35400;
  --cr-accent-light: rgba(230, 126, 34, 0.1);
  --cr-text: #e8e8e8;
  --cr-text-muted: #9ca3af;
  --cr-card: #1e293b;
  --cr-card-border: #334155;
  --cr-input-bg: #0f172a;
  --cr-success: #22c55e;
  --cr-warning: #eab308;
  --cr-danger: #ef4444;
  --cr-radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--cr-dark);
  color: var(--cr-text);
  line-height: 1.6;
  min-height: 100vh;
}

/* Header */
.cr-header {
  background: var(--cr-mid);
  border-bottom: 1px solid var(--cr-card-border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.cr-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cr-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--cr-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.cr-logo span { color: var(--cr-accent); }
.cr-nav { display: flex; gap: 24px; }
.cr-nav a {
  color: var(--cr-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.cr-nav a:hover { color: var(--cr-accent); }

/* Hero */
.cr-hero {
  text-align: center;
  padding: 80px 20px 60px;
  max-width: 800px;
  margin: 0 auto;
}
.cr-hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
}
.cr-hero h1 span { color: var(--cr-accent); }
.cr-hero p {
  font-size: 1.2rem;
  color: var(--cr-text-muted);
  max-width: 600px;
  margin: 0 auto 32px;
}

/* Tool Grid */
.cr-grid {
  max-width: 1200px;
  margin: 0 auto 80px;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.cr-tool-card {
  background: var(--cr-card);
  border: 1px solid var(--cr-card-border);
  border-radius: var(--cr-radius);
  padding: 28px;
  text-decoration: none;
  color: var(--cr-text);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cr-tool-card:hover {
  border-color: var(--cr-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 126, 34, 0.1);
}
.cr-tool-card .cr-tool-icon {
  font-size: 2rem;
  width: 56px;
  height: 56px;
  background: var(--cr-accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cr-tool-card h3 { font-size: 1.15rem; font-weight: 700; }
.cr-tool-card p { font-size: 0.9rem; color: var(--cr-text-muted); margin: 0; }
.cr-tool-card .cr-badge {
  display: inline-block;
  background: var(--cr-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  align-self: flex-start;
}
.cr-tool-card .cr-badge.coming {
  background: var(--cr-card-border);
  color: var(--cr-text-muted);
}

/* Calculator Page Layout */
.cr-calc-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}
.cr-calc-page h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}
.cr-calc-page .cr-subtitle {
  color: var(--cr-text-muted);
  font-size: 1rem;
  margin-bottom: 32px;
}

/* Input Groups */
.cr-input-group {
  margin-bottom: 20px;
}
.cr-input-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--cr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.cr-input-group input,
.cr-input-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--cr-input-bg);
  border: 1px solid var(--cr-card-border);
  border-radius: 8px;
  color: var(--cr-text);
  font-size: 1rem;
  transition: border-color 0.2s;
  outline: none;
}
.cr-input-group input:focus,
.cr-input-group select:focus {
  border-color: var(--cr-accent);
}
.cr-input-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239ca3af' d='M6 8.825L.6 3.425 1.4 2.6 6 7.175 10.6 2.6l.8.825z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.cr-input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* Results Panel */
.cr-results {
  background: var(--cr-card);
  border: 2px solid var(--cr-accent);
  border-radius: var(--cr-radius);
  padding: 28px;
  margin-top: 32px;
}
.cr-results h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cr-accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}
.cr-result-main {
  text-align: center;
  padding: 20px 0;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--cr-card-border);
}
.cr-result-main .cr-big-number {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--cr-accent);
  line-height: 1;
}
.cr-result-main .cr-big-label {
  font-size: 1rem;
  color: var(--cr-text-muted);
  margin-top: 4px;
}
.cr-result-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.cr-detail-item {
  background: var(--cr-input-bg);
  border-radius: 8px;
  padding: 16px;
}
.cr-detail-item .cr-detail-value {
  font-size: 1.3rem;
  font-weight: 700;
}
.cr-detail-item .cr-detail-label {
  font-size: 0.8rem;
  color: var(--cr-text-muted);
  margin-top: 2px;
}

/* Status indicators */
.cr-status-good { color: var(--cr-success); }
.cr-status-warn { color: var(--cr-warning); }
.cr-status-bad { color: var(--cr-danger); }

/* NEC Reference Table */
.cr-table-wrap {
  margin-top: 32px;
  overflow-x: auto;
}
.cr-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.cr-table th {
  background: var(--cr-input-bg);
  color: var(--cr-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--cr-card-border);
}
.cr-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--cr-card-border);
}
.cr-table tr.cr-highlight {
  background: var(--cr-accent-light);
}
.cr-table tr.cr-highlight td {
  color: var(--cr-accent);
  font-weight: 700;
}

/* Info box */
.cr-info-box {
  background: var(--cr-accent-light);
  border-left: 3px solid var(--cr-accent);
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  margin-top: 24px;
  font-size: 0.9rem;
  color: var(--cr-text-muted);
}
.cr-info-box strong { color: var(--cr-text); }

/* Footer */
.cr-footer {
  background: var(--cr-mid);
  border-top: 1px solid var(--cr-card-border);
  padding: 40px 20px;
  text-align: center;
  color: var(--cr-text-muted);
  font-size: 0.85rem;
}
.cr-footer a { color: var(--cr-accent); text-decoration: none; }

/* Ad Zone placeholder */
.cr-ad-zone {
  background: var(--cr-card);
  border: 1px dashed var(--cr-card-border);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  color: var(--cr-card-border);
  font-size: 0.8rem;
  margin: 24px 0;
  display: none; /* hidden until ads are live */
}

/* Mobile */
@media (max-width: 640px) {
  .cr-hero h1 { font-size: 2rem; }
  .cr-hero { padding: 40px 20px 32px; }
  .cr-grid { grid-template-columns: 1fr; }
  .cr-input-row { grid-template-columns: 1fr; }
  .cr-result-details { grid-template-columns: 1fr; }
  .cr-nav { display: none; }
  .cr-result-main .cr-big-number { font-size: 2.5rem; }
}