/* Co-Op Session Scheduler — Styles */
:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-border: #e2e8f0;
  --color-accent: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --max-width: 960px;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

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

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-icon {
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  gap: 1.25rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-primary);
}

/* Main Content */
.main-content {
  flex: 1;
}

/* Scheduler Section */
.scheduler-section {
  padding: 2rem 1.5rem;
}

.scheduler-card {
  max-width: var(--max-width);
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 2rem;
  border: 1px solid var(--color-border);
}

.scheduler-card h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.scheduler-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.session-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-row-split {
  flex-direction: row;
  gap: 1rem;
}

.form-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
}

.form-input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 70px;
}

.quick-times-row {
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.quick-times {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-hover);
}

.btn-secondary {
  background: #f1f5f9;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: #e2e8f0;
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-outline:hover,
.btn-outline:focus-visible {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

/* Preview Panel */
.preview-panel {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

.preview-heading {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.preview-content {
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  min-height: 60px;
  font-size: 0.95rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 1rem;
}

.preview-empty {
  color: var(--color-text-muted);
  font-style: italic;
}

.preview-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.copy-feedback {
  font-size: 0.85rem;
  color: var(--color-primary);
  margin-top: 0.5rem;
  min-height: 1.2em;
}

/* Supporting Sections */
.supporting-section,
.why-section {
  padding: 2rem 1.5rem;
}

.supporting-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.supporting-inner h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.support-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.support-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}

.support-card p {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.support-note {
  color: var(--color-text-muted) !important;
  font-size: 0.85rem !important;
  margin-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  padding-top: 0.75rem;
}

.mistakes-list {
  list-style: none;
  padding: 0;
}

.mistakes-list li {
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
  padding-left: 1.2rem;
  position: relative;
}

.mistakes-list li::before {
  content: '✗';
  position: absolute;
  left: 0;
  color: #ef4444;
  font-weight: 700;
}

/* FAQ */
.faq-block h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  background: var(--color-surface);
}

.faq-item summary {
  padding: 0.75rem 1rem;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.95rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item p {
  padding: 0 1rem 0.75rem 1rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Why Section */
.why-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.why-section p {
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
  max-width: 70ch;
}

.version-note {
  color: var(--color-text-muted);
  font-size: 0.85rem !important;
  margin-top: 1rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 1.25rem 1.5rem;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-inner a {
  color: var(--color-primary);
  text-decoration: none;
}

.footer-inner a:hover {
  text-decoration: underline;
}

.footer-nav {
  display: flex;
  gap: 1rem;
}

.footer-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--color-primary);
}

/* Responsive */
@media (max-width: 600px) {
  .scheduler-card {
    padding: 1.25rem;
  }

  .scheduler-card h1 {
    font-size: 1.4rem;
  }

  .form-row-split {
    flex-direction: column;
  }

  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 0.75rem 0;
    gap: 0.5rem;
  }

  .main-nav {
    gap: 1rem;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .preview-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-border: #334155;
    --color-primary: #818cf8;
    --color-primary-hover: #6366f1;
  }

  .preview-content {
    background: #0f172a;
  }

  .btn-secondary {
    background: #334155;
    color: #e2e8f0;
  }

  .btn-outline {
    color: #e2e8f0;
  }

  .btn-outline:hover {
    background: #334155;
  }

  .mistakes-list li::before {
    color: #f87171;
  }
}



/* 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;
}