/* Sleep Recovery Planner - Main Styles */
:root {
  --color-bg: #F0F4F8;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F8FAFC;
  --color-border: #CBD5E1;
  --color-border-light: #E2E8F0;
  --color-text: #1E293B;
  --color-text-secondary: #475569;
  --color-text-muted: #94A3B8;
  --color-primary: #3B82F6;
  --color-primary-hover: #2563EB;
  --color-primary-light: #DBEAFE;
  --color-accent: #6366F1;
  --color-success: #16A34A;
  --color-success-light: #DCFCE7;
  --color-warning: #D97706;
  --color-warning-light: #FEF3C7;
  --color-danger: #DC2626;
  --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(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;
  --max-width: 1200px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

.skip-link {
  position: absolute;
  top: -100%;
  left: 20px;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
}
.skip-link:focus {
  top: 20px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
}
.logo:hover {
  text-decoration: none;
}
.main-nav ul {
  display: flex;
  list-style: none;
  gap: 24px;
}
.main-nav a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}
.main-nav a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}

/* Main Layout */
main {
  flex: 1;
}
.planner-layout {
  padding-top: 32px;
  padding-bottom: 48px;
}

/* Intro */
.planner-intro {
  text-align: center;
  margin-bottom: 36px;
}
.planner-intro h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.intro-sub {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Workspace Grid */
.workspace-grid {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 900px) {
  .workspace-grid {
    grid-template-columns: 1fr;
  }
}

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
}

/* Forms */
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--color-text-secondary);
}
.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
  font-family: var(--font-sans);
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.form-group fieldset {
  border: none;
  padding: 0;
  margin: 0 0 18px;
}
.form-group legend {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}
.help-text {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.inline-fields {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 10px;
}
.inline-fields label {
  font-size: 0.8rem;
  text-align: center;
}
.inline-fields input {
  text-align: center;
  padding: 8px 4px;
}
.debt-inputs {
  grid-template-columns: repeat(7, 1fr);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  font-family: var(--font-sans);
  gap: 6px;
}
.btn:active {
  transform: scale(0.98);
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background: var(--color-surface-alt);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  font-size: 0.85rem;
  padding: 8px 14px;
}
.btn-secondary:hover {
  background: var(--color-border-light);
  color: var(--color-text);
}

/* Debt Card */
.debt-card {
  text-align: center;
}
.debt-number {
  display: block;
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
}
.debt-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.debt-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 10px;
}

/* Plan Output */
.plan-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-text-muted);
}
.plan-empty svg {
  margin-bottom: 16px;
  opacity: 0.6;
}
.plan-header {
  margin-bottom: 16px;
}
.plan-header h3 {
  margin-bottom: 4px;
}
.plan-meta {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.plan-tips {
  background: var(--color-warning-light);
  border: 1px solid #FDE68A;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 0.9rem;
  color: #92400E;
}
.plan-tips:empty {
  display: none;
}

/* Schedule Table */
.schedule-wrap {
  overflow-x: auto;
  margin-bottom: 16px;
}
.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.schedule-table th {
  text-align: left;
  padding: 10px 12px;
  background: var(--color-surface-alt);
  border-bottom: 2px solid var(--color-border);
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
}
.schedule-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border-light);
}
.schedule-table tr:hover td {
  background: var(--color-surface-alt);
}
.schedule-table .weekend td {
  background: #EFF6FF;
}

/* Plan Actions */
.plan-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.save-status {
  font-size: 0.85rem;
  min-height: 1.4em;
}
.save-status.success {
  color: var(--color-success);
}
.save-status.error {
  color: var(--color-danger);
}

/* Common Mistakes */
.common-mistakes ul {
  list-style: none;
  padding: 0;
}
.common-mistakes li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}
.common-mistakes li:last-child {
  border-bottom: none;
}

/* Guide Section */
.planner-guide {
  margin-top: 40px;
  margin-bottom: 40px;
}
.planner-guide h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 16px;
}
@media (max-width: 768px) {
  .guide-grid {
    grid-template-columns: 1fr;
  }
}
.guide-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.guide-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}
.guide-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}
.guide-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* Scenarios */
.planner-scenarios {
  margin-bottom: 40px;
}
.planner-scenarios h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.scenario-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.scenario {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-sm);
}
.scenario summary {
  font-weight: 600;
  cursor: pointer;
  color: var(--color-text);
  font-size: 0.95rem;
}
.scenario summary:hover {
  color: var(--color-primary);
}
.scenario p {
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  padding: 24px 0;
  margin-top: auto;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.9rem;
}
.footer-nav ul {
  display: flex;
  list-style: none;
  gap: 20px;
}
.footer-nav a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}
.footer-nav a:hover {
  color: var(--color-primary);
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  width: 100%;
  text-align: center;
  margin-top: 8px;
}
@media (max-width: 600px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-copy {
    text-align: left;
  }
}

/* Print Styles */
@media print {
  .site-header,
  .site-footer,
  .input-panel,
  .plan-actions,
  .plan-empty,
  .common-mistakes,
  .planner-guide,
  .planner-scenarios,
  .planner-intro,
  .debt-card {
    display: none !important;
  }
  .workspace-grid {
    display: block;
  }
  .plan-content {
    display: block !important;
  }
  .plan-content[hidden] {
    display: block !important;
  }
  .card {
    box-shadow: none;
    border: none;
    padding: 0;
  }
  body {
    background: #fff;
    color: #000;
  }
  .schedule-table th {
    background: #eee;
  }
  .schedule-table .weekend td {
    background: #f0f0ff;
  }
}



/* 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;
}