/* TaxReply: Letter & Penalty Response Planner */
:root {
  --c-primary: #1a5276;
  --c-primary-light: #2980b9;
  --c-primary-dark: #0e3a54;
  --c-accent: #2ecc71;
  --c-accent-dark: #27ae60;
  --c-danger: #e74c3c;
  --c-warm: #f39c12;
  --c-bg: #f7f9fc;
  --c-surface: #ffffff;
  --c-border: #dce1e8;
  --c-text: #2c3e50;
  --c-text-light: #5d6d7e;
  --c-text-muted: #85929e;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --max-width: 1200px;
  --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);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

.skip-link {
  position: absolute; top: -100%; left: 16px; z-index: 100;
  background: var(--c-primary); color: #fff; padding: 8px 16px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}
.skip-link:focus { top: 0; }

/* Header */
.site-header {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--c-primary); font-weight: 700; font-size: 1.2rem;
}
.logo:hover, .logo:focus { text-decoration: none; }

.main-nav { display: flex; gap: 24px; }
.main-nav a {
  color: var(--c-text-light); font-size: 0.95rem; font-weight: 500;
  padding: 4px 0; border-bottom: 2px solid transparent;
  transition: var(--transition);
}
.main-nav a:hover, .main-nav a:focus {
  color: var(--c-primary); border-bottom-color: var(--c-primary);
  text-decoration: none;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 10px 20px; border-radius: var(--radius-sm);
  font-size: 0.95rem; font-weight: 600; cursor: pointer;
  border: 2px solid transparent; transition: var(--transition);
  text-decoration: none; line-height: 1.4;
}
.btn:hover, .btn:focus { text-decoration: none; }
.btn-primary { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.btn-primary:hover, .btn-primary:focus { background: var(--c-primary-dark); border-color: var(--c-primary-dark); }
.btn-ghost { background: transparent; color: var(--c-primary); border-color: var(--c-border); }
.btn-ghost:hover, .btn-ghost:focus { border-color: var(--c-primary); background: rgba(26,82,118,0.04); }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff; padding: 60px 0 70px;
}
.hero h1 { font-size: 2.4rem; font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.hero-sub { font-size: 1.15rem; opacity: 0.9; margin-bottom: 28px; max-width: 560px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.hero-actions .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.4); }
.hero-actions .btn-ghost:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.hero-note { font-size: 0.85rem; opacity: 0.7; }

/* Sections */
section { padding: 60px 0; }
.section-intro { color: var(--c-text-light); margin-bottom: 32px; max-width: 640px; }

/* Planner */
.planner-section { background: var(--c-bg); }
.planner-layout {
  display: grid; grid-template-columns: 1fr 380px; gap: 32px; align-items: start;
}

.planner-form { background: var(--c-surface); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.planner-form h2 { font-size: 1.5rem; margin-bottom: 4px; }
.planner-form .section-intro { margin-bottom: 24px; }

.form-group { border: none; margin-bottom: 28px; }
.form-step {
  font-size: 1.05rem; font-weight: 700; color: var(--c-primary);
  margin-bottom: 16px; display: flex; align-items: center; gap: 10px;
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--c-primary); color: #fff; font-size: 0.85rem; font-weight: 700;
}

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 4px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--c-border);
  border-radius: var(--radius-sm); font-size: 0.95rem; font-family: var(--font);
  background: var(--c-surface); color: var(--c-text); transition: var(--transition);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--c-primary-light); box-shadow: 0 0 0 3px rgba(41,128,185,0.15);
}
.field textarea { resize: vertical; }
.field-hint { display: block; font-size: 0.8rem; color: var(--c-text-muted); margin-top: 4px; }

/* Preset cards */
.preset-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
}
.preset-card {
  display: flex; flex-direction: column; gap: 4px;
  padding: 16px; border: 2px solid var(--c-border); border-radius: var(--radius-sm);
  cursor: pointer; transition: var(--transition); background: var(--c-surface);
}
.preset-card:hover { border-color: var(--c-primary-light); }
.preset-card input { position: absolute; opacity: 0; width: 0; height: 0; }
.preset-card:has(input:checked) { border-color: var(--c-primary); background: rgba(26,82,118,0.04); }
.preset-icon { margin-bottom: 4px; }
.preset-label { font-weight: 600; font-size: 0.9rem; }
.preset-desc { font-size: 0.8rem; color: var(--c-text-muted); }

/* Checkboxes */
.checkbox-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.checkbox-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; border: 1px solid var(--c-border); border-radius: var(--radius-sm);
  font-size: 0.9rem; cursor: pointer; transition: var(--transition);
}
.checkbox-item:hover { border-color: var(--c-primary-light); }
.checkbox-item:has(input:checked) { border-color: var(--c-accent-dark); background: rgba(46,204,113,0.06); }
.checkbox-item input { accent-color: var(--c-accent-dark); }

.form-actions { display: flex; gap: 12px; flex-wrap: wrap; padding-top: 8px; }

/* Sidebar */
.planner-sidebar { position: relative; }
.sidebar-sticky { position: sticky; top: 80px; }
.sidebar-card {
  background: var(--c-surface); border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow); margin-bottom: 20px;
}
.sidebar-card h3 { font-size: 1.1rem; margin-bottom: 16px; color: var(--c-primary); }
.sidebar-card h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--c-text-muted); margin-bottom: 8px; }

.summary-empty { text-align: center; color: var(--c-text-muted); padding: 20px 0; }
.summary-empty svg { margin-bottom: 12px; }

.summary-block { margin-bottom: 20px; }
.deadline-highlight {
  font-size: 1.3rem; font-weight: 700; color: var(--c-danger);
}
.timeline-list { list-style: none; counter-reset: step; }
.timeline-list li {
  counter-increment: step; padding: 8px 0 8px 36px; position: relative;
  border-left: 2px solid var(--c-border); margin-left: 10px; font-size: 0.9rem;
}
.timeline-list li::before {
  content: counter(step); position: absolute; left: -12px; top: 8px;
  width: 22px; height: 22px; border-radius: 50%; background: var(--c-primary);
  color: #fff; font-size: 0.75rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.timeline-list li:last-child { border-left-color: transparent; }

.doc-list { list-style: none; font-size: 0.9rem; }
.doc-list li { padding: 4px 0; display: flex; align-items: center; gap: 8px; }
.doc-list li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); flex-shrink: 0; }
.doc-list li.missing::before { background: var(--c-warm); }

.draft-preview {
  background: var(--c-bg); border: 1px solid var(--c-border); border-radius: var(--radius-sm);
  padding: 16px; font-size: 0.85rem; line-height: 1.7; white-space: pre-wrap;
  max-height: 300px; overflow-y: auto;
}

.summary-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.save-confirm { font-size: 0.85rem; color: var(--c-accent-dark); margin-top: 8px; }

/* Examples */
.examples-section { background: var(--c-surface); }
.examples-section h2 { font-size: 1.5rem; margin-bottom: 8px; }
.example-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.example-card {
  background: var(--c-bg); border-radius: var(--radius); padding: 24px;
  border: 1px solid var(--c-border);
}
.example-card h3 { font-size: 1.05rem; margin-bottom: 4px; }
.example-meta { font-size: 0.85rem; color: var(--c-text-muted); margin-bottom: 12px; }
.example-card p { font-size: 0.9rem; color: var(--c-text-light); margin-bottom: 8px; }
.example-tip {
  font-size: 0.85rem; color: var(--c-primary); background: rgba(26,82,118,0.06);
  padding: 10px 14px; border-radius: var(--radius-sm); border-left: 3px solid var(--c-primary);
}

/* Guide */
.guide-section { background: var(--c-bg); }
.guide-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; }
.guide-main h2 { font-size: 1.5rem; margin-bottom: 16px; }
.guide-main h3 { font-size: 1.15rem; margin: 28px 0 10px; color: var(--c-primary); }
.guide-main p { margin-bottom: 12px; color: var(--c-text-light); }
.mistake-list { list-style: none; margin: 12px 0; }
.mistake-list li { padding: 8px 0 8px 20px; position: relative; font-size: 0.95rem; color: var(--c-text-light); }
.mistake-list li::before { content: ""; position: absolute; left: 0; top: 14px; width: 8px; height: 8px; border-radius: 50%; background: var(--c-danger); }

.checklist { list-style: none; counter-reset: ck; }
.checklist li {
  counter-increment: ck; padding: 8px 0 8px 32px; position: relative;
  font-size: 0.9rem; border-bottom: 1px solid var(--c-border);
}
.checklist li::before {
  content: counter(ck); position: absolute; left: 0; top: 8px;
  width: 22px; height: 22px; border-radius: 50%; background: var(--c-primary);
  color: #fff; font-size: 0.75rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

/* FAQ */
.faq-section { background: var(--c-surface); }
.faq-section h2 { font-size: 1.5rem; margin-bottom: 24px; }
.faq-list { max-width: 720px; }
.faq-item { border-bottom: 1px solid var(--c-border); }
.faq-toggle {
  width: 100%; text-align: left; background: none; border: none;
  font-size: 1rem; font-weight: 600; font-family: var(--font);
  color: var(--c-text); padding: 16px 0; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
}
.faq-toggle::after {
  content: "+"; font-size: 1.3rem; color: var(--c-primary); transition: var(--transition);
}
.faq-toggle[aria-expanded="true"]::after { content: "−"; }
.faq-item dd { padding: 0 0 16px; font-size: 0.95rem; color: var(--c-text-light); }

/* Footer */
.site-footer {
  background: var(--c-primary-dark); color: rgba(255,255,255,0.7);
  padding: 40px 0; margin-top: auto;
}
.footer-inner { display: flex; flex-direction: column; gap: 16px; }
.footer-brand .logo-text { color: #fff; font-size: 1.1rem; font-weight: 700; }
.footer-brand p { font-size: 0.85rem; margin-top: 4px; }
.footer-brand a { color: rgba(255,255,255,0.9); }
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-nav a { color: rgba(255,255,255,0.8); font-size: 0.9rem; }
.footer-legal { font-size: 0.8rem; opacity: 0.6; }

/* Print */
@media print {
  .site-header, .site-footer, .hero, .examples-section, .guide-section, .faq-section,
  .planner-form, .summary-actions, .form-actions { display: none !important; }
  .planner-layout { display: block; }
  .planner-sidebar { position: static; }
  .sidebar-sticky { position: static; }
  .sidebar-card { box-shadow: none; border: 1px solid #ccc; }
  .draft-preview { max-height: none; overflow: visible; }
  body { background: #fff; color: #000; }
}

/* Responsive */
@media (max-width: 1024px) {
  .planner-layout { grid-template-columns: 1fr; }
  .planner-sidebar { order: -1; }
  .sidebar-sticky { position: static; }
  .guide-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero { padding: 40px 0 50px; }
  .hero h1 { font-size: 1.8rem; }
  .hero-sub { font-size: 1rem; }
  .field-row { grid-template-columns: 1fr; }
  .preset-grid { grid-template-columns: repeat(2, 1fr); }
  .checkbox-grid { grid-template-columns: 1fr; }
  .example-grid { grid-template-columns: 1fr; }
  .main-nav { gap: 14px; }
  .main-nav a { font-size: 0.85rem; }
  section { padding: 40px 0; }
  .planner-form { padding: 20px; }
}

@media (max-width: 480px) {
  .preset-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .form-actions { flex-direction: column; }
  .form-actions .btn { width: 100%; }
}



/* 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;
}