:root {
  --green-950: #052e16;
  --green-900: #0f4d2e;
  --green-800: #166534;
  --green-700: #15803d;
  --green-600: #16a34a;
  --green-100: #dcfce7;
  --green-50: #f0fdf4;

  --solar-700: #b45309;
  --solar-600: #d97706;
  --solar-500: #f59e0b;
  --solar-400: #fbbf24;
  --solar-100: #fef3c7;
  --solar-50: #fffbeb;

  --sky-700: #0369a1;
  --sky-600: #0284c7;
  --sky-500: #0ea5e9;
  --sky-100: #e0f2fe;
  --sky-50: #f0f9ff;

  --sand: #faf7f2;
  --warm-white: #fffcf7;
  --stone: #78716c;
  --stone-light: #e7e5e4;
  --white: #ffffff;
  --text: #1c1917;
  --text-muted: #57534e;

  --shadow-sm: 0 2px 12px rgba(15, 77, 46, 0.06);
  --shadow: 0 8px 32px rgba(15, 77, 46, 0.1);
  --shadow-lg: 0 16px 48px rgba(15, 77, 46, 0.14);
  --radius: 14px;
  --radius-lg: 20px;
  --font: "DM Sans", system-ui, sans-serif;
  --font-display: "Instrument Serif", Georgia, serif;

  --gradient-brand: linear-gradient(135deg, var(--green-800) 0%, var(--green-600) 45%, var(--solar-500) 100%);
  --gradient-hero: linear-gradient(145deg, var(--green-50) 0%, var(--solar-50) 38%, var(--sky-50) 72%, var(--white) 100%);
  --gradient-solar: linear-gradient(135deg, var(--solar-600), var(--solar-400));
  --gradient-dark: linear-gradient(160deg, var(--green-950) 0%, var(--green-900) 55%, #0a3d28 100%);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--warm-white);
  line-height: 1.65;
  font-size: 16px;
}

img { max-width: 100%; display: block; }

a { color: var(--green-800); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--solar-600); }

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 252, 247, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(22, 101, 52, 0.1);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
}

.logo:hover { color: var(--text); }

.logo__mark {
  width: 44px;
  height: 44px;
  background: var(--gradient-brand);
  color: var(--white);
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 1.35rem;
  box-shadow: 0 4px 14px rgba(217, 119, 6, 0.35);
}

.logo__text {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.logo__text em {
  font-style: normal;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav a:hover {
  color: var(--green-800);
  border-bottom-color: var(--solar-400);
  text-decoration: none;
}

.nav__cta {
  background: var(--gradient-brand) !important;
  color: var(--white) !important;
  padding: 11px 22px !important;
  border-radius: 100px !important;
  border: none !important;
  box-shadow: 0 4px 16px rgba(22, 101, 52, 0.25);
}

.nav__cta:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
  text-decoration: none;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--green-900);
  border-radius: 2px;
}

/* Hero */
.hero {
  position: relative;
  background: var(--gradient-hero);
  padding: 88px 0 104px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.22) 0%, transparent 68%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -120px;
  left: -80px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 52px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--solar-200, #fde68a);
  background: linear-gradient(135deg, var(--white), var(--solar-50));
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--green-800);
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-solar);
  flex-shrink: 0;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.2vw, 3.35rem);
  font-weight: 400;
  line-height: 1.12;
  margin-bottom: 22px;
  color: var(--green-950);
}

.hero h1 em {
  font-style: normal;
  color: var(--solar-600);
}

.hero__lead {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 32px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
}

.btn:hover { text-decoration: none; transform: translateY(-2px); }

.btn--primary {
  background: var(--gradient-brand);
  color: var(--white);
  box-shadow: 0 6px 20px rgba(22, 101, 52, 0.28);
}

.btn--primary:hover {
  color: var(--white);
  filter: brightness(1.05);
  box-shadow: 0 8px 28px rgba(217, 119, 6, 0.3);
}

.btn--ghost {
  background: var(--white);
  color: var(--green-800);
  border: 2px solid var(--green-700);
}

.btn--ghost:hover {
  background: var(--green-50);
  color: var(--green-900);
  border-color: var(--solar-500);
}

.btn--solar {
  background: var(--gradient-solar);
  color: var(--green-950);
  box-shadow: 0 6px 20px rgba(217, 119, 6, 0.25);
}

.btn--full { width: 100%; }
.btn--sm { padding: 9px 18px; font-size: 0.85rem; }

.trust-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.trust-list li {
  padding: 10px 14px 10px 42px;
  position: relative;
  color: var(--text-muted);
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.65);
  border-radius: 10px;
  border: 1px solid rgba(22, 101, 52, 0.08);
}

.trust-list li::before {
  content: "✓";
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  background: var(--green-100);
  color: var(--green-700);
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 800;
  display: grid;
  place-items: center;
}

.hero__card {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow);
  border: 1px solid var(--stone-light);
  border-left: 4px solid var(--sky-500);
}

.stat-card--alt {
  background: var(--gradient-dark);
  color: var(--white);
  border-color: transparent;
  border-left: 4px solid var(--solar-400);
}

.stat-card--solar {
  border-left-color: var(--solar-500);
  background: linear-gradient(135deg, var(--white), var(--solar-50));
}

.stat-card__value {
  display: block;
  font-family: var(--font-display);
  font-size: 2.9rem;
  line-height: 1;
  margin-bottom: 10px;
  color: var(--green-800);
}

.stat-card--alt .stat-card__value {
  color: var(--solar-400);
}

.stat-card__label {
  font-size: 0.9rem;
  opacity: 0.88;
  line-height: 1.45;
}

/* Sections */
.section {
  padding: 88px 0;
}

.section--muted {
  background: var(--sand);
  border-block: 1px solid rgba(22, 101, 52, 0.06);
}

.section--accent {
  background: linear-gradient(180deg, var(--sky-50) 0%, var(--warm-white) 100%);
}

.section--dark {
  background: var(--gradient-dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.section--dark::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(ellipse at top right, rgba(245, 158, 11, 0.15), transparent 60%);
  pointer-events: none;
}

.section--dark h2 { color: var(--white); }

.section__head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 52px;
}

.section__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--solar-600);
  background: var(--solar-100);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 14px;
}

.section--dark .section__label {
  background: rgba(245, 158, 11, 0.2);
  color: var(--solar-400);
}

.section__head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3vw, 2.5rem);
  font-weight: 400;
  margin-bottom: 14px;
  color: var(--green-950);
}

.section__head p {
  color: var(--text-muted);
  font-size: 1.02rem;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--white);
  border: 1px solid var(--stone-light);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-brand);
  opacity: 0.85;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: rgba(22, 101, 52, 0.15);
}

.card--sun::before { background: var(--gradient-solar); }
.card--energy::before { background: linear-gradient(90deg, var(--sky-600), var(--sky-500)); }
.card--battery::before { background: linear-gradient(90deg, var(--green-700), var(--green-600)); }

.card__icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
  border-radius: 14px;
  background: var(--solar-100);
}

.card--sun .card__icon { background: var(--solar-100); }
.card--energy .card__icon { background: var(--sky-100); }
.card--battery .card__icon { background: var(--green-100); }

.card h3 {
  font-size: 1.22rem;
  margin-bottom: 12px;
  color: var(--green-950);
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 18px;
}

.card ul {
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.card ul li {
  padding: 6px 0;
  padding-left: 18px;
  position: relative;
}

.card ul li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--solar-600);
  font-weight: 700;
}

/* Aides */
.aides-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.aide-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 26px 22px;
  border: 1px solid var(--stone-light);
  border-top: 4px solid var(--green-700);
  transition: transform 0.2s, box-shadow 0.2s;
}

.aide-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.aide-card[data-country="fr"] { border-top-color: #2563eb; }
.aide-card[data-country="be"] { border-top-color: #eab308; }
.aide-card[data-country="lu"] { border-top-color: #dc2626; }
.aide-card[data-country="ch"] { border-top-color: #dc2626; }

.aide-card h3 {
  font-size: 1.05rem;
  margin-bottom: 16px;
  color: var(--green-950);
}

.aide-card ul {
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.aide-card li {
  padding: 8px 0;
  border-bottom: 1px solid var(--stone-light);
}

.aide-card li:last-child { border-bottom: none; }

.aide-card li strong {
  color: var(--green-800);
}

/* Simulator */
.simulator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  background: var(--white);
  border: 1px solid var(--stone-light);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.simulator::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--gradient-brand);
}

.simulator__info h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  color: var(--green-950);
  margin-bottom: 12px;
}

.simulator__info p {
  color: var(--text-muted);
}

.simulator__result {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--green-50), var(--solar-50));
  border: 2px solid var(--green-100);
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
}

.simulator__result h3 {
  color: var(--green-900);
  margin-bottom: 8px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.result__amount {
  font-family: var(--font-display);
  font-size: 2.75rem;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 10px;
}

.result__detail {
  color: var(--text-muted);
  margin-bottom: 22px;
  font-size: 0.92rem;
  max-width: 520px;
  margin-inline: auto;
}

/* Forms */
.form-row {
  margin-bottom: 18px;
}

.form-row--half {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--green-900);
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--stone-light);
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--warm-white);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--green-600);
  box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.12);
}

.checkbox {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  cursor: pointer;
}

.checkbox input { margin-top: 3px; flex-shrink: 0; accent-color: var(--green-700); }

.form-note {
  margin-top: 12px;
  font-size: 0.88rem;
  text-align: center;
}

.form-note.success {
  color: var(--green-800);
  background: var(--green-50);
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--green-100);
}

.form-note.error {
  color: #b91c1c;
  background: #fef2f2;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid #fecaca;
}

/* Steps */
.steps {
  position: relative;
  z-index: 1;
}

.steps h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  text-align: center;
  margin-bottom: 52px;
}

.steps__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.steps__list li {
  display: flex;
  gap: 16px;
  background: rgba(255, 255, 255, 0.06);
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.steps__num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--gradient-solar);
  color: var(--green-950);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.steps__list strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.05rem;
  color: var(--solar-100);
}

.steps__list p {
  font-size: 0.9rem;
  opacity: 0.88;
  line-height: 1.55;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-grid h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--green-950);
  margin-bottom: 12px;
}

.contact-grid > div > p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.contact-info {
  background: linear-gradient(135deg, var(--green-50), var(--sky-50));
  padding: 26px;
  border-radius: var(--radius);
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.85;
  border: 1px solid var(--green-100);
}

.contact-info strong {
  color: var(--green-900);
  font-size: 1rem;
}

.contact-form {
  background: var(--white);
  padding: 36px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--stone-light);
  box-shadow: var(--shadow);
}

/* Footer */
.footer {
  background: var(--green-950);
  color: #a7f3d0;
  padding: 64px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer .logo { color: var(--white); margin-bottom: 16px; }

.footer .logo__text em {
  background: linear-gradient(135deg, var(--solar-400), var(--solar-500));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.footer__desc {
  font-size: 0.9rem;
  max-width: 320px;
  color: #86efac;
  opacity: 0.85;
}

.footer h4 {
  color: var(--solar-400);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.footer ul {
  list-style: none;
  font-size: 0.88rem;
}

.footer ul li { padding: 5px 0; }

.footer a { color: #86efac; }
.footer a:hover { color: var(--solar-400); }

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  font-size: 0.8rem;
  text-align: center;
  color: #6ee7b7;
  opacity: 0.75;
}

.footer__disclaimer {
  margin-top: 8px;
  max-width: 700px;
  margin-inline: auto;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--green-950);
  color: var(--white);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  z-index: 200;
  font-size: 0.9rem;
  border-top: 3px solid var(--solar-500);
}

.cookie-banner a { color: var(--solar-400); }
.cookie-banner.hidden { display: none; }

/* Legal pages */
.legal-page {
  padding: 120px 0 80px;
  max-width: 760px;
  margin: 0 auto;
}

.legal-page h1 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--green-950);
  margin-bottom: 8px;
}

.legal-page .updated {
  color: var(--stone);
  font-size: 0.88rem;
  margin-bottom: 32px;
}

.legal-page h2 {
  font-size: 1.2rem;
  color: var(--green-900);
  margin: 32px 0 12px;
}

.legal-page p, .legal-page li {
  color: var(--text-muted);
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.legal-page ul { padding-left: 20px; margin-bottom: 16px; }

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 0.9rem;
  font-weight: 600;
}

/* Responsive */
@media (max-width: 960px) {
  .hero__grid,
  .cards,
  .aides-grid,
  .simulator,
  .steps__list,
  .contact-grid,
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--warm-white);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--stone-light);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    pointer-events: none;
    box-shadow: var(--shadow);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .menu-toggle { display: flex; }

  .form-row--half { grid-template-columns: 1fr; }

  .hero { padding: 52px 0 72px; }
  .section { padding: 60px 0; }
  .simulator { padding: 28px; }

  .mobile-cta { display: flex; }
}

.mobile-cta {
  display: none;
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 90;
  background: var(--gradient-brand);
  color: var(--white);
  padding: 14px 28px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 8px 32px rgba(22, 101, 52, 0.35);
}

.mobile-cta:hover {
  color: var(--white);
  text-decoration: none;
  filter: brightness(1.06);
}

.mobile-cta.hidden { display: none !important; }