/* PourPlan: Party Beverage Quantity Planner — Stylesheet */
:root {
  --color-bg: #FFF8F0;
  --color-surface: #FFFFFF;
  --color-surface-alt: #FFF3E0;
  --color-primary: #C47A17;
  --color-primary-dark: #A86510;
  --color-primary-light: #F5D9A8;
  --color-accent: #2E7D32;
  --color-accent-light: #E8F5E9;
  --color-text: #2D2420;
  --color-text-secondary: #6B5E56;
  --color-text-muted: #9E928A;
  --color-border: #E8DDD4;
  --color-border-strong: #D4C5B8;
  --color-error: #C62828;
  --color-warning-bg: #FFF8E1;
  --color-warning-border: #FFD54F;
  --color-success-bg: #E8F5E9;
  --color-success-border: #81C784;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
  --max-width: 1160px;
  --header-height: 64px;
  --transition: 0.2s ease;
}

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

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

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

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}
.logo:hover, .logo:focus-visible { text-decoration: none; color: var(--color-primary-dark); }

.site-nav {
  display: flex;
  gap: 24px;
}

.site-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}

/* Hero */
.hero {
  padding: 64px 0 48px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-surface-alt) 0%, var(--color-bg) 100%);
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-text);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
  line-height: 1.4;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn-secondary:hover, .btn-secondary:focus-visible {
  background: var(--color-surface-alt);
  border-color: var(--color-primary);
  text-decoration: none;
}

.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-lg { padding: 14px 28px; font-size: 1.05rem; }

/* Planner Section */
.planner-section {
  padding: 48px 0;
}

.planner-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 32px;
  align-items: start;
}

.planner-inputs h2,
.planner-results h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--color-text-secondary); }
.form-group input,
.form-group select {
  padding: 10px 12px;
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(196, 122, 23, 0.15);
}

.form-hint { font-size: 0.8rem; color: var(--color-text-muted); }

/* Drinker Split */
.drinker-split {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 20px 0;
}

.drinker-split legend {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 0 8px;
}

.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.form-group-sm .pct-input {
  display: flex;
  align-items: center;
  gap: 4px;
}

.form-group-sm .pct-input input {
  width: 100%;
  text-align: center;
}

.form-group-sm .pct-input span {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.split-warning {
  margin-top: 10px;
  padding: 8px 12px;
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-text);
}

/* Presets */
.presets {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
}

.presets-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-right: 4px;
}

/* Results Panel */
.planner-results {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.results-sticky {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.results-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.summary-card {
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}

.summary-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.2;
}

.summary-label {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.results-breakdown h3,
.results-ice h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}

.breakdown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.breakdown-table th {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 2px solid var(--color-border-strong);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
}

.breakdown-table th:last-child,
.breakdown-table td:last-child {
  text-align: right;
}

.breakdown-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--color-border);
}

.breakdown-table tr:last-child td { border-bottom: none; }

.results-ice {
  background: var(--color-accent-light);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 20px;
}

.results-ice p {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
}

.results-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.results-actions .btn-primary {
  grid-column: 1 / -1;
}

.action-feedback {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--color-accent);
  min-height: 1.4em;
}

/* Saved Plans */
.saved-section {
  padding: 48px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.saved-section h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-description {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  max-width: 600px;
}

.saved-list {
  display: grid;
  gap: 12px;
}

.saved-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  gap: 12px;
}

.saved-card-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.saved-card-info p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.saved-card-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.empty-state {
  color: var(--color-text-muted);
  font-style: italic;
  padding: 20px 0;
}

/* Tips Section */
.tips-section {
  padding: 48px 0 64px;
}

.tips-section h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.tip-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.tip-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-primary-dark);
}

.tip-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.scenario-walkthrough {
  background: var(--color-surface-alt);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 24px;
}

.scenario-walkthrough h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.scenario-walkthrough p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.assumptions-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.assumptions-block h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.assumptions-block ul {
  padding-left: 20px;
}

.assumptions-block li {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
  line-height: 1.5;
}

/* Footer */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding: 40px 0 20px;
  font-size: 0.85rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-brand .logo-mark {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

.footer-brand p {
  margin-top: 4px;
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 16px;
  text-align: center;
}

/* Responsive */
@media (max-width: 900px) {
  .planner-grid {
    grid-template-columns: 1fr;
  }
  .results-sticky {
    position: static;
  }
  .tips-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .site-nav { gap: 14px; }
  .site-nav a { font-size: 0.8rem; }
  .hero { padding: 40px 0 32px; }
  .form-row { grid-template-columns: 1fr; }
  .split-row { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .results-actions { grid-template-columns: 1fr; }
  .saved-card { flex-direction: column; align-items: flex-start; }
  .footer-top { flex-direction: column; }
}

/* Print */
@media print {
  .site-header, .site-footer, .hero, .presets, .results-actions, .saved-section, .tips-section { display: none; }
  .planner-section { padding: 0; }
  .planner-grid { grid-template-columns: 1fr; }
  .planner-inputs { display: none; }
  .planner-results { border: none; padding: 0; }
  .results-sticky { position: static; }
  body { background: #fff; color: #000; }
}

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !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;
}