@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;0,8..60,700;1,8..60,400&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

:root {
  --color-bg: #FAFAF7;
  --color-surface: #FFFFFF;
  --color-text: #1A1A1A;
  --color-text-secondary: #5A5A5A;
  --color-accent: #0057B8;
  --color-accent-hover: #003D82;
  --color-accent-light: #E8F0FE;
  --color-success: #0A8754;
  --color-success-light: #E6F5ED;
  --color-warning: #D97706;
  --color-warning-light: #FEF3C7;
  --color-border: #E5E5E0;
  --color-border-strong: #C8C8C0;
  --font-display: 'Source Serif 4', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --max-width: 1200px;
  --content-width: 780px;
  --radius: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
}

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

html { font-size: 17px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ─── HEADER ─── */
.site-header {
  background: transparent;
  border-bottom: none;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-accent);
  color: white;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
}

.main-nav { display: flex; gap: 0; align-items: center; }

.main-nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 1.2rem 1rem;
  transition: color 0.2s, border-color 0.2s;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav-cta {
  background: var(--color-accent) !important;
  color: white !important;
  padding: 0.55rem 1.2rem !important;
  border-radius: var(--radius) !important;
  border: none !important;
  font-weight: 600 !important;
  transition: background 0.2s !important;
}

.nav-cta:hover { background: var(--color-accent-hover) !important; }

/* ─── MOBILE NAV ─── */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-text); margin: 5px 0; transition: 0.3s; }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: transparent;
    flex-direction: column;
    border-bottom: none;
    box-shadow: var(--shadow-md);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 1rem 2rem; border-bottom: none; }
}

/* ─── HERO ─── */
.hero {
  background: linear-gradient(135deg, #0057B8 0%, #003D82 60%, #001F4D 100%);
  color: white;
  padding: 5rem 2rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.15;
  max-width: 800px;
  margin: 0 auto 1rem;
  position: relative;
}

.hero .subtitle {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 2.5rem;
  position: relative;
}

.hero-stat {
  text-align: center;
}

.hero-stat .number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  display: block;
}

.hero-stat .label {
  font-size: 0.82rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── SECTIONS ─── */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 2rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
}

/* ─── PILLAR CARDS ─── */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.pillar-card {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
  display: flex;
  flex-direction: column;
}

.pillar-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.pillar-card .pillar-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.2rem;
}

.pillar-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.pillar-card p {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  flex: 1;
  margin-bottom: 1.2rem;
}

.pillar-card .card-link {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.pillar-card .card-link::after { content: '→'; transition: transform 0.2s; }
.pillar-card:hover .card-link::after { transform: translateX(4px); }

/* Pillar colors */
.pillar-solaire .pillar-icon { background: #FEF3C7; color: #D97706; }
.pillar-pac .pillar-icon { background: #DBEAFE; color: #2563EB; }
.pillar-renovation .pillar-icon { background: #E6F5ED; color: #0A8754; }
.pillar-achat .pillar-icon { background: #F3E8FF; color: #7C3AED; }
.pillar-vente .pillar-icon { background: #FFE4E6; color: #DC2626; }

/* ─── AIDE BADGE / TAG ─── */
.aide-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.aide-tag--state { background: var(--color-accent-light); color: var(--color-accent); }
.aide-tag--credit { background: var(--color-success-light); color: var(--color-success); }
.aide-tag--local { background: var(--color-warning-light); color: var(--color-warning); }
.aide-tag--fiscal { background: #F3E8FF; color: #7C3AED; }

/* ─── ARTICLE LIST ─── */
.article-list { display: flex; flex-direction: column; gap: 1rem; }

.article-item {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.15s;
}

.article-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.article-item h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.article-item p {
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  line-height: 1.5;
}

.article-item .tags { display: flex; gap: 0.4rem; margin-top: 0.5rem; flex-wrap: wrap; }

/* ─── CONTENT / ARTICLE PAGE ─── */
.article-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 3rem 2rem;
}

.article-content .breadcrumb {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.article-content .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}

.article-content h1 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.8rem;
}

.article-content .meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: none;
}

.article-content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 2.5rem 0 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.article-content h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 2rem 0 0.8rem;
}

.article-content p { margin-bottom: 1.2rem; }

.article-content ul, .article-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.article-content li { margin-bottom: 0.5rem; }

/* ─── INFO BOX ─── */
.info-box {
  border-left: 4px solid var(--color-accent);
  background: var(--color-accent-light);
  padding: 1.2rem 1.5rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}

.info-box.info-box--success {
  border-color: var(--color-success);
  background: var(--color-success-light);
}

.info-box.info-box--warning {
  border-color: var(--color-warning);
  background: var(--color-warning-light);
}

.info-box strong { display: block; margin-bottom: 0.3rem; }

/* ─── AIDE TABLE ─── */
.aide-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.aide-table th {
  background: var(--color-bg);
  text-align: left;
  padding: 0.8rem 1rem;
  font-weight: 600;
  border-bottom: 2px solid var(--color-border-strong);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-secondary);
}

.aide-table td {
  padding: 0.8rem 1rem;
  border-bottom: none;
}

.aide-table tr:hover td { background: var(--color-bg); }

.aide-table .montant {
  font-weight: 700;
  color: var(--color-success);
  font-family: var(--font-display);
}

/* ─── LEAD FORM ─── */
.lead-section {
  background: transparent;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 2.5rem;
  margin: 3rem 0;
}

.lead-section h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  border: none;
  padding-top: 0;
}

.lead-section .lead-subtitle {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 600px) {
  .form-grid { grid-template-columns: 1fr; }
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,87,184,0.12);
}

.form-group.full-width { grid-column: 1 / -1; }

.form-consent {
  grid-column: 1 / -1;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  margin-top: 0.5rem;
}

.form-consent input { margin-top: 0.2rem; }

.btn-submit {
  grid-column: 1 / -1;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  padding: 0.9rem 2rem;
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  margin-top: 0.5rem;
}

.btn-submit:hover { background: var(--color-accent-hover); }
.btn-submit:active { transform: scale(0.98); }

.form-success {
  display: none;
  text-align: center;
  padding: 2rem;
}

.form-success .check-icon {
  width: 60px;
  height: 60px;
  background: var(--color-success-light);
  color: var(--color-success);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

/* ─── SIDEBAR TOC ─── */
.content-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 2rem;
  display: grid;
  grid-template-columns: var(--content-width) 1fr;
  gap: 4rem;
}

@media (max-width: 1100px) {
  .content-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

.sidebar {
  position: sticky;
  top: 84px;
  align-self: start;
}

.toc {
  border-left: 2px solid var(--color-border);
  padding-left: 1.2rem;
}

.toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: 0.8rem;
}

.toc a {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 0.3rem 0;
  transition: color 0.2s;
  line-height: 1.4;
}

.toc a:hover, .toc a.active { color: var(--color-accent); }

/* ─── COMMUNE SEARCH ─── */
.commune-search {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2rem;
}

.commune-search input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1.05rem;
  padding: 0.8rem 1rem 0.8rem 2.8rem;
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius);
  background: var(--color-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%235A5A5A' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E") 0.8rem center no-repeat;
  transition: border-color 0.2s;
}

.commune-search input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.commune-results {
  margin-top: 1rem;
  display: none;
}

.commune-results a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.7rem 0;
  border-bottom: none;
  text-decoration: none;
  color: inherit;
}

.commune-results a:hover { color: var(--color-accent); }

.commune-results .dept {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}

/* ─── FOOTER ─── */
.site-footer {
  background: #1A1A1A;
  color: #A0A0A0;
  padding: 4rem 2rem 2rem;
  margin-top: 4rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
}

@media (max-width: 800px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.6;
  margin-top: 0.8rem;
}

.footer-col h4 {
  color: white;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}

.footer-col a {
  display: block;
  color: #A0A0A0;
  text-decoration: none;
  font-size: 0.88rem;
  padding: 0.25rem 0;
  transition: color 0.2s;
}

.footer-col a:hover { color: white; }

.footer-bottom {
  max-width: var(--max-width);
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid #333;
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
}

/* ─── UTILITY ─── */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }
.hidden { display: none; }