/* WaterWise Wash - Car Wash Water Usage Tracker */
:root {
  --clr-primary: #0d7377;
  --clr-primary-dark: #095456;
  --clr-primary-light: #14919b;
  --clr-accent: #e0f7fa;
  --clr-bg: #f0f7f8;
  --clr-surface: #ffffff;
  --clr-text: #1a2b2d;
  --clr-text-muted: #4a6568;
  --clr-border: #c8dfe3;
  --clr-danger: #d32f2f;
  --clr-danger-bg: #fff0f0;
  --clr-warning: #f59e0b;
  --clr-warning-bg: #fff8e1;
  --clr-ok: #2e7d32;
  --clr-ok-bg: #e8f5e9;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(13, 115, 119, 0.08);
  --shadow-lg: 0 8px 32px rgba(13, 115, 119, 0.12);
  --container: 1120px;
  --font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--clr-primary); text-decoration: none; }
a:hover, a:focus-visible { color: var(--clr-primary-dark); text-decoration: underline; }

img, svg { display: block; max-width: 100%; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }

/* Header */
.site-header {
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--clr-text);
  white-space: nowrap;
}
.logo:hover, .logo:focus-visible { text-decoration: none; color: var(--clr-text); }
.logo .accent { color: var(--clr-primary); }

.main-nav {
  display: flex;
  gap: 1.5rem;
}
.main-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.main-nav a:hover, .main-nav a:focus-visible {
  color: var(--clr-primary);
  border-bottom-color: var(--clr-primary);
  text-decoration: none;
}

/* Hero */
.hero-section {
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-light) 100%);
  color: #fff;
  padding: 4rem 0 3rem;
}

.hero-content h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-sub {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
  margin-bottom: 2rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8rem;
  opacity: 0.85;
}

/* Sections */
section { padding: 3.5rem 0; }

.section-header { margin-bottom: 2rem; }
.section-header h2 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 700;
  color: var(--clr-text);
}
.section-header p {
  color: var(--clr-text-muted);
  margin-top: 0.35rem;
}

/* Cards */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

/* Tracker Grid */
.tracker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 768px) {
  .tracker-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.25rem; }
  .stat-number { font-size: 1.35rem; }
}

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  color: var(--clr-text);
}

.form-group select,
.form-group input[type="number"] {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1.5px solid var(--clr-border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: var(--font);
  color: var(--clr-text);
  background: var(--clr-bg);
  transition: border-color 0.2s;
}

.form-group select:focus,
.form-group input:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.15);
}

.field-hint {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  margin-top: 0.25rem;
  display: block;
}

.range-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--clr-border);
  border-radius: 3px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--clr-primary);
  cursor: pointer;
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.range-output {
  font-weight: 700;
  font-size: 1rem;
  color: var(--clr-primary);
  min-width: 70px;
  text-align: right;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
}
.btn-secondary {
  background: var(--clr-primary);
  color: #fff;
}
.btn-secondary:hover { background: var(--clr-primary-dark); }
.btn-ghost {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn-ghost:hover { background: var(--clr-accent); }

.form-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.save-notice {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--clr-ok);
  font-weight: 500;
}

/* Results */
.tracker-results h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.result-item {
  background: var(--clr-bg);
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
}

.result-value {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1.2;
}

.result-label {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  display: block;
  margin-top: 0.2rem;
}

/* Restriction Alert */
.restriction-alert {
  display: flex;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--clr-danger-bg);
  border: 1px solid #ffcdd2;
  border-radius: 10px;
  margin-bottom: 1.25rem;
}
.restriction-alert .alert-text strong {
  color: var(--clr-danger);
  display: block;
  margin-bottom: 0.2rem;
}
.restriction-alert .alert-text p {
  font-size: 0.85rem;
  color: var(--clr-text);
}

.restriction-alert.warning {
  background: var(--clr-warning-bg);
  border-color: #ffe082;
}
.restriction-alert.warning .alert-text strong { color: var(--clr-warning); }

/* Recommendation */
.recommendation-box {
  background: var(--clr-accent);
  border-radius: 10px;
  padding: 1rem;
}
.recommendation-box h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}
.recommendation-box p {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
}
.rec-savings {
  margin-top: 0.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--clr-ok);
}

/* Comparison Table */
.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  box-shadow: var(--shadow);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.comparison-table th {
  background: var(--clr-primary);
  color: #fff;
  padding: 0.85rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.85rem;
  white-space: nowrap;
}

.comparison-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--clr-border);
  white-space: nowrap;
}

.comparison-table tbody tr:last-child td { border-bottom: none; }
.comparison-table tbody tr:hover td { background: var(--clr-bg); }
.comparison-table tbody tr.highlighted td { background: var(--clr-accent); }

.badge-danger {
  color: var(--clr-danger);
  font-weight: 700;
}
.badge-warning {
  color: var(--clr-warning);
  font-weight: 700;
}
.badge-ok {
  color: var(--clr-ok);
  font-weight: 700;
}

.table-note {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  margin-top: 0.75rem;
}

/* Guide Section */
.guide-section { background: var(--clr-surface); }
.guide-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 768px) {
  .guide-grid { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr 1fr; }
}

.guide-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 1.5rem 0 0.5rem;
  color: var(--clr-primary-dark);
}
.guide-card h3:first-child { margin-top: 0; }
.guide-card p {
  color: var(--clr-text-muted);
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

/* Sidebar Cards */
.guide-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.guide-sidebar .card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.scenarios-card details {
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--clr-border);
  padding-bottom: 0.75rem;
}
.scenarios-card details:last-child {
  margin-bottom: 0;
  border-bottom: none;
  padding-bottom: 0;
}
.scenarios-card summary {
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--clr-text);
  font-weight: 500;
}
.scenarios-card summary:hover { color: var(--clr-primary); }
.scenarios-card details p {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-top: 0.5rem;
  line-height: 1.5;
}

.mistakes-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.mistakes-list li {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.5;
}
.mistakes-list li::before {
  content: "\2022";
  position: absolute;
  left: 0;
  color: var(--clr-warning);
  font-size: 1.2rem;
  line-height: 1.3;
}
.mistakes-list li strong { color: var(--clr-text); }

.export-card p {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-bottom: 1rem;
}

.export-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  background: var(--clr-primary-dark);
  color: rgba(255,255,255,0.8);
  padding: 2rem 0 1.5rem;
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.footer-brand .logo-text { color: #fff; }
.footer-brand p { margin-top: 0.25rem; }
.footer-brand a { color: var(--clr-accent); }
.footer-brand a:hover { color: #fff; }

.footer-nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-nav a { color: rgba(255,255,255,0.8); }
.footer-nav a:hover { color: #fff; }

.footer-note {
  font-size: 0.78rem;
  opacity: 0.6;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 1rem;
}

/* Print */
@media print {
  .site-header, .site-footer, .guide-sidebar, .hero-stats, .form-actions, .export-actions { display: none; }
  body { background: #fff; }
  .card { box-shadow: none; border: 1px solid #ccc; }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}