/* ==========================================================================
   CalculPensionAlimentaire.com — Design System Officiel 2026
   Style Légal & Financier Français : Marianne & Legal-Tech Minimaliste
   ========================================================================== */

:root {
  --primary: #1D4ED8;
  --primary-hover: #1E40AF;
  --primary-light: #EFF6FF;
  --navy: #0B1E36;
  --navy-light: #162C4E;
  --accent: #059669;
  --accent-light: #ECFDF5;
  --bg-page: #F8FAFC;
  --bg-card: #FFFFFF;
  --border: #E2E8F0;
  --text-main: #0F172A;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* --- Barre Tricolore Française --- */
.fr-tricolor-bar {
  height: 4px;
  width: 100%;
  display: flex;
}
.fr-tricolor-bar .blue { flex: 1; background-color: #002654; }
.fr-tricolor-bar .white { flex: 1; background-color: #FFFFFF; }
.fr-tricolor-bar .red { flex: 1; background-color: #CE1126; }

/* --- Header & Navigation --- */
header.site-header {
  background-color: var(--navy);
  color: #FFFFFF;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-md);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #FFFFFF;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #2563EB, #1D4ED8);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.3rem;
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: #94A3B8;
  display: block;
  font-weight: 500;
}

nav.main-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  align-items: center;
}

nav.main-nav a {
  color: #CBD5E1;
  text-decoration: none;
  font-size: 0.925rem;
  font-weight: 600;
  transition: color 0.2s ease;
  padding: 0.4rem 0.2rem;
}

nav.main-nav a:hover, nav.main-nav a.active {
  color: #FFFFFF;
  border-bottom: 2px solid #38BDF8;
}

/* --- Container & Layout --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.hero-section {
  text-align: center;
  max-width: 860px;
  margin: 0 auto 3rem auto;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--primary-light);
  color: var(--primary);
  font-size: 0.825rem;
  font-weight: 700;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--navy);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- The Interactive Simulator Card --- */
.calculator-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  padding: 2.5rem;
  margin-bottom: 4rem;
}

@media (max-width: 900px) {
  .calculator-card {
    grid-template-columns: 1fr;
    padding: 1.5rem;
    gap: 2rem;
  }
}

.calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.input-label {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--navy);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.number-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.currency-symbol {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 1.1rem;
}

input[type="number"] {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.25rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  background-color: #FFFFFF;
  transition: all 0.2s ease;
}

input[type="number"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Slider */
input[type="range"] {
  width: 100%;
  height: 8px;
  background: #E2E8F0;
  border-radius: 4px;
  outline: none;
  cursor: pointer;
  accent-color: var(--primary);
}

/* Segmented Options (Custody Modes) */
.options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.option-btn {
  background-color: var(--bg-page);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem 0.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.option-btn:hover {
  border-color: #CBD5E1;
}

.option-btn.active {
  background-color: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 700;
}

.option-btn .opt-title {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
}

.option-btn .opt-sub {
  display: block;
  font-size: 0.725rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* Children Selector Pill Buttons */
.children-pills {
  display: flex;
  gap: 0.5rem;
}

.pill-btn {
  flex: 1;
  padding: 0.65rem 0;
  text-align: center;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-page);
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pill-btn.active {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #FFFFFF;
}

/* --- Results Panel --- */
.calc-results {
  background: linear-gradient(145deg, #0C192C, #132742);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.calc-results::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
  border-radius: 50%;
}

.results-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
}

.res-eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #94A3B8;
  font-weight: 700;
}

.res-total-amount {
  font-size: 3.5rem;
  font-weight: 900;
  color: #FFFFFF;
  line-height: 1;
  margin: 0.5rem 0 0.25rem 0;
  letter-spacing: -0.03em;
}

.res-total-sub {
  font-size: 0.95rem;
  color: #38BDF8;
  font-weight: 600;
}

.res-breakdown {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-bottom: 1.75rem;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
  color: #CBD5E1;
}

.breakdown-row strong {
  color: #FFFFFF;
  font-weight: 700;
}

.res-actions {
  display: flex;
  gap: 0.75rem;
}

.btn-action {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

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

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

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.18);
}

/* --- Content Sections & Typography --- */
.content-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.article-content h2 {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--navy);
  margin: 2rem 0 1rem 0;
  letter-spacing: -0.02em;
}

.article-content h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
  margin: 1.5rem 0 0.75rem 0;
}

.article-content p {
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
  color: #334155;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-content li {
  margin-bottom: 0.5rem;
  font-size: 1.025rem;
  color: #334155;
}

/* Callout Box */
.info-callout {
  background-color: var(--primary-light);
  border-left: 4px solid var(--primary);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.75rem 0;
}

.info-callout h4 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 0.4rem;
}

.info-callout p {
  font-size: 0.95rem;
  margin: 0;
  color: #1E3A8A;
}

/* Official Table Styles */
.table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
}

table.data-table th {
  background-color: var(--navy);
  color: #FFFFFF;
  padding: 0.9rem 1rem;
  font-weight: 700;
}

table.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
}

table.data-table tr:nth-child(even) {
  background-color: #F8FAFC;
}

table.data-table tr:hover {
  background-color: #F1F5F9;
}

/* FAQ Accordion */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  background-color: #FFFFFF;
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-question {
  padding: 1.25rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 1.25rem 1.25rem 1.25rem;
  font-size: 1rem;
  color: #475569;
  line-height: 1.6;
}

/* Sidebar Widgets */
.sidebar-widget {
  background-color: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}

.sidebar-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border);
}

.links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.links-list a {
  color: var(--primary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color 0.2s ease;
}

.links-list a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* Footer */
footer.site-footer {
  background-color: var(--navy);
  color: #94A3B8;
  padding: 3.5rem 1.5rem 2rem 1.5rem;
  margin-top: 5rem;
  font-size: 0.9rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 992px) {
  .footer-container {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 600px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.footer-brand h3 {
  color: #FFFFFF;
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col a {
  color: #94A3B8;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: #FFFFFF;
}

.footer-legal-bar {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

@media (max-width: 600px) {
  .footer-legal-bar {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* Print Stylesheet for Certificate */
@media print {
  header, nav, .hero-section, .calc-inputs, .content-grid, footer, .res-actions {
    display: none !important;
  }
  body, .calculator-card {
    background: #FFFFFF !important;
    box-shadow: none !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
  }
  .calc-results {
    background: #FFFFFF !important;
    color: #000000 !important;
    border: 2px solid #000000 !important;
    box-shadow: none !important;
  }
  .res-total-amount, .breakdown-row strong {
    color: #000000 !important;
  }
  .res-total-sub, .res-eyebrow {
    color: #333333 !important;
  }
}