/* =====================================================
   Budżet Domowy — /tools shared styles
   Reużywa zmiennych z /css/app.css
   ===================================================== */

/* === ZMIENNE (fallback jeśli app.css nie jest załadowany) === */
:root {
  --primary: #1565C0;
  --primary-dark: #0D47A1;
  --primary-light: #1976D2;
  --primary-pale: #E3F2FD;
  --accent: #FF6F00;
  --success: #2E7D32;
  --success-pale: #E8F5E9;
  --warning: #F57F17;
  --warning-pale: #FFF8E1;
  --danger: #C62828;
  --danger-pale: #FFEBEE;
  --text: #212121;
  --text-secondary: #757575;
  --text-inverse: #FFFFFF;
  --bg: #FAFAFA;
  --bg-card: #FFFFFF;
  --border: #E0E0E0;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 24px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
  min-height: 100dvh;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === TOOLS HEADER/NAV === */
.tools-nav {
  background: var(--primary);
  color: var(--text-inverse);
  padding: 0 16px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}
.tools-nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-inverse);
  text-decoration: none;
}
.tools-nav-brand:hover { text-decoration: none; opacity: 0.9; }
.tools-nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.875rem;
}
.tools-nav-links a { color: rgba(255,255,255,0.85); }
.tools-nav-links a:hover { color: #fff; text-decoration: none; }

/* === CONTAINER === */
.tools-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

/* === BREADCRUMB === */
.tools-breadcrumb {
  padding: 12px 16px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  max-width: 960px;
  margin: 0 auto;
}
.tools-breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}
.tools-breadcrumb li + li::before {
  content: '›';
  margin-right: 4px;
  color: var(--border);
}
.tools-breadcrumb a { color: var(--primary); }
.tools-breadcrumb [aria-current] { color: var(--text-secondary); }

/* === TOOL HEADER === */
.tool-page-header {
  padding: 32px 16px 24px;
  max-width: 960px;
  margin: 0 auto;
}
.tool-page-header h1 {
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.tool-page-header .tool-icon { font-size: 2rem; }
.tool-page-header p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 640px;
}

/* === HUB HEADER === */
.tools-hub-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--text-inverse);
  padding: 48px 16px 40px;
  text-align: center;
}
.tools-hub-header h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.tools-hub-header p {
  font-size: 1.0625rem;
  opacity: 0.9;
  max-width: 560px;
  margin: 0 auto 24px;
}

/* === SEARCH === */
.tools-search-wrap {
  max-width: 480px;
  margin: 0 auto;
  position: relative;
}
.tools-search {
  width: 100%;
  padding: 12px 16px 12px 44px;
  border: none;
  border-radius: 999px;
  font-size: 1rem;
  background: rgba(255,255,255,0.15);
  color: var(--text-inverse);
  outline: none;
  backdrop-filter: blur(4px);
}
.tools-search::placeholder { color: rgba(255,255,255,0.65); }
.tools-search:focus { background: rgba(255,255,255,0.25); }
.tools-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  pointer-events: none;
}

/* === CATEGORY FILTERS === */
.tools-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 24px 16px 0;
  max-width: 960px;
  margin: 0 auto;
}
.filter-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 2px solid var(--border);
  border-radius: 999px;
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1;
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--text-inverse);
}
.filter-btn .filter-count {
  background: rgba(0,0,0,0.12);
  border-radius: 999px;
  padding: 1px 7px;
  font-size: 0.75rem;
}
.filter-btn.active .filter-count { background: rgba(255,255,255,0.25); }

/* === TOOLS GRID === */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  padding: 20px 16px 40px;
  max-width: 960px;
  margin: 0 auto;
}

/* === TOOL CARD === */
.tool-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
  position: relative;
  overflow: hidden;
}
.tool-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--primary-pale);
  text-decoration: none;
}
.tool-card-icon { font-size: 2rem; margin-bottom: 10px; display: block; }
.tool-card h2, .tool-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.35;
}
.tool-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 12px;
}
.tool-card-cta {
  font-size: 0.8125rem;
  color: var(--primary);
  font-weight: 600;
}
.tool-badge-popular {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}
.tool-badge-external::after {
  content: ' ↗';
  font-size: 0.75em;
  opacity: 0.7;
}

/* No results */
.tools-no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 16px;
  color: var(--text-secondary);
}
.tools-no-results p { font-size: 1rem; margin-bottom: 12px; }

/* === CALCULATOR WRAPPER === */
.calc-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 760px;
  margin: 0 auto 24px;
}
.calc-inputs {
  padding: 24px;
  display: grid;
  gap: 16px;
}
.calc-inputs label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
}
.calc-inputs input[type="number"],
.calc-inputs input[type="text"],
.calc-inputs select {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}
.calc-inputs input:focus,
.calc-inputs select:focus { border-color: var(--primary); }
.calc-inputs .hint {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Toggle row */
.calc-toggle-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.calc-toggle-btn {
  flex: 1;
  min-width: 100px;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s;
}
.calc-toggle-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--text-inverse);
}

/* Checkbox row */
.calc-checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-direction: row !important;
  font-weight: 400 !important;
}
.calc-checkbox-row input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

/* Range + value display */
.calc-range-row { gap: 8px !important; }
.calc-range-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.calc-range-value {
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
}
input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
  height: 4px;
}

/* Two-column inputs on wider screens */
@media (min-width: 560px) {
  .calc-inputs.two-col { grid-template-columns: 1fr 1fr; }
  .calc-inputs.two-col .full { grid-column: 1 / -1; }
}

/* === RESULTS === */
.calc-results {
  padding: 20px 24px;
  background: var(--primary-pale);
  border-top: 1px solid var(--border);
  display: grid;
  gap: 12px;
}
.result-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  border: 1px solid var(--border);
}
.result-card--highlight {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}
.result-label { font-size: 0.875rem; opacity: 0.85; }
.result-value { font-size: 1.1875rem; font-weight: 700; }
.result-card--highlight .result-label { opacity: 0.8; }

/* Result grid: 2 columns */
@media (min-width: 480px) {
  .calc-results.two-col { grid-template-columns: 1fr 1fr; }
  .calc-results.two-col .result-card--highlight { grid-column: 1 / -1; }
}

/* === BMI BAR === */
.bmi-scale {
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(to right, #29B6F6 0%, #66BB6A 25%, #FFA726 60%, #EF5350 100%);
  position: relative;
  margin-top: 4px;
}
.bmi-pointer {
  position: absolute;
  top: -4px;
  width: 20px;
  height: 20px;
  background: var(--text);
  border: 3px solid #fff;
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: var(--shadow);
  transition: left 0.4s;
}

/* === FAQ === */
.tool-faq {
  max-width: 760px;
  margin: 0 auto 32px;
  padding: 0 16px;
}
.tool-faq h2 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
}
.faq-item summary {
  padding: 14px 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9375rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card);
  user-select: none;
}
.faq-item summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--primary);
  flex-shrink: 0;
  margin-left: 12px;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item summary:hover { background: var(--primary-pale); }
.faq-answer {
  padding: 14px 16px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  line-height: 1.6;
}

/* === RELATED TOOLS === */
.related-tools {
  max-width: 960px;
  margin: 0 auto 40px;
  padding: 0 16px;
}
.related-tools h2 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.related-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.related-card:hover { box-shadow: var(--shadow); border-color: var(--primary-pale); text-decoration: none; }
.related-card-icon { font-size: 1.375rem; }
.related-card-title { font-size: 0.875rem; font-weight: 600; color: var(--text); }

/* === BACK LINKS === */
.tools-back-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 760px;
  margin: 0 auto 24px;
  padding: 0 16px;
}
.tools-back-link {
  font-size: 0.875rem;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* === CATEGORY PAGE HEADER === */
.category-header {
  padding: 32px 16px 16px;
  max-width: 960px;
  margin: 0 auto;
}
.category-header .cat-icon { font-size: 2.5rem; margin-bottom: 8px; display: block; }
.category-header h1 { font-size: clamp(1.375rem, 3vw, 1.875rem); font-weight: 800; margin-bottom: 8px; }
.category-header p { font-size: 1rem; color: var(--text-secondary); max-width: 600px; }

/* === RESULTS TABLE (for detailed calculators) === */
.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 8px;
}
.results-table th, .results-table td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.results-table th { font-weight: 600; color: var(--text-secondary); font-size: 0.8125rem; }
.results-table tr:last-child td { border-bottom: none; }
.results-table tr.highlight td { font-weight: 700; color: var(--primary); }

/* === FOOTER === */
.tools-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 24px 16px;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.tools-footer a { color: var(--primary); }

/* === RESPONSIVE === */
@media (max-width: 640px) {
  .tools-hub-header { padding: 32px 16px 28px; }
  .tools-grid { grid-template-columns: 1fr; }
  .calc-inputs { padding: 16px; }
  .calc-results { padding: 16px; }
}

/* === DARK MODE SUPPORT === */
@media (prefers-color-scheme: dark) {
  .dark-mode-auto {
    --bg: #121212;
    --bg-card: #1E1E1E;
    --text: #E0E0E0;
    --text-secondary: #9E9E9E;
    --border: #333;
    --primary-pale: #1A2E50;
  }
}