:root {
    --navy: #1a2336;
    --navy-light: #243049;
    --gold: #D3A625;
    --gold-light: #f0c040;
    --cream: #F7F4EF;
    --white: #FFFFFF;
    --grey: #8a9ab5;
    --legacy-shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
    --legacy-border: 1px solid rgba(0, 0, 0, 0.05);
    --couleur-principale: var(--navy);
    --couleur-accent: var(--gold);
    --couleur-fond: var(--cream);
    --couleur-blanc: var(--white);
    --header-height: 80px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'DM Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: var(--cream);
    color: var(--navy);
    padding-top: var(--header-height);
}

header {
    height: var(--header-height);
    padding: 0 20px;
    background: rgba(26, 35, 54, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(211, 166, 37, 0.2);
    box-shadow: none;
}

header .logo {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

header .logo img {
    display: none;
}

header .logo::before {
    content: "HAIZE";
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--white);
}

header .logo::after {
    content: "Elec";
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--gold);
}

header nav a {
    color: rgba(255, 255, 255, 0.72);
    font-weight: 600;
    font-size: 0.88rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

header nav a:hover {
    color: var(--gold);
}

.article-container {
    max-width: 920px;
    margin: 40px auto 60px;
    padding: 50px;
    border-radius: 14px;
    border: var(--legacy-border);
    box-shadow: var(--legacy-shadow);
}

.blog-category {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--gold);
    font-weight: 700;
}

h1 {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    letter-spacing: -0.02em;
    font-size: clamp(1.9rem, 3.2vw, 2.7rem);
    line-height: 1.18;
    color: var(--navy);
}

h2 {
    color: var(--navy);
    border-bottom: 2px solid var(--gold);
    padding-bottom: 8px;
    margin-top: 42px;
}

h3 {
    color: var(--navy);
    gap: 12px;
}

h3 i,
.blog-category i,
ul li i,
.zone-item i,
.related-link i,
.faq h3 i {
    color: var(--gold);
}

.title-underline {
    width: 88px;
    height: 4px;
    margin: 20px 0 34px;
}

p {
    color: #36455c;
}

.author-box {
    gap: 16px;
    padding: 18px 20px;
    border-radius: 10px;
    border: 1px solid rgba(36, 48, 73, 0.08);
    border-left: 1px solid rgba(36, 48, 73, 0.08);
    background: linear-gradient(135deg, rgba(36, 48, 73, 0.04) 0%, rgba(211, 166, 37, 0.08) 100%);
}

.author-box i {
    color: var(--navy);
}

.author-box p,
.author-box-info p {
    color: #4d5d77;
}

.author-name,
.author-box-name {
    color: var(--navy);
    font-weight: 700;
}

a:not(.btn-gold):not(.related-link):not(.cta-button) {
    color: var(--gold);
}

:is(.urgence-box) {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: #fff;
    border-radius: 12px;
    padding: 24px 28px;
    box-shadow: 0 18px 34px rgba(192, 57, 43, 0.18);
}

:is(.info-box, .highlight-box, .aide-box, .warning-box, .diagnostic-box, .somfy-box) {
    background: linear-gradient(135deg, rgba(26, 35, 54, 0.96) 0%, rgba(36, 48, 73, 0.98) 100%);
    color: #fff;
    border-radius: 12px;
    padding: 24px 26px;
    box-shadow: var(--legacy-shadow);
}

:is(.info-box, .highlight-box, .aide-box, .warning-box, .diagnostic-box, .somfy-box) h3,
:is(.info-box, .highlight-box, .aide-box, .warning-box, .diagnostic-box, .somfy-box) h4,
:is(.info-box, .highlight-box, .aide-box, .warning-box, .diagnostic-box, .somfy-box) p,
:is(.info-box, .highlight-box, .aide-box, .warning-box, .diagnostic-box, .somfy-box) li,
:is(.info-box, .highlight-box, .aide-box, .warning-box, .diagnostic-box, .somfy-box) strong {
    color: #fff;
}

:is(.note-badge, .aide-badge, .somfy-badge) {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(211, 166, 37, 0.16);
    color: var(--gold);
    border: 1px solid rgba(211, 166, 37, 0.28);
    border-radius: 999px;
    padding: 7px 14px;
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

:is(.tarif-grid, .prix-grid, .comparatif-grid, .puissance-grid, .zone-grid, .zone-list, .related-links) {
    gap: 18px;
}

:is(.tarif-card, .prix-card, .comparatif-card, .puissance-card, .avantage-card, .feature-box, .choix-card) {
    background: #fff;
    border-radius: 12px;
    border: var(--legacy-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    padding: 24px 22px;
}

:is(.tarif-card, .prix-card, .puissance-card, .comparatif-card) h4,
:is(.feature-box, .choix-card, .avantage-card) h4 {
    margin-top: 0;
}

.tarif-label,
.prix-label,
.puissance-label {
    color: #66758f;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.tarif-price,
.prix-value,
.puissance-value {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    color: var(--navy);
}

.tarif-sub,
.prix-sub,
.puissance-sub {
    color: #79869a;
}

.tarif-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    padding: 16px 18px;
    border-radius: 10px;
    border: var(--legacy-border);
    background: #fff;
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.05);
    margin: 12px 0;
}

.zone-item {
    background: #f0f4f8;
    border-radius: 8px;
}

.faq-section,
.faq {
    margin-top: 46px;
}

.faq-item {
    border-bottom: 1px solid #e8ecf2;
}

details.faq-item {
    padding: 20px 0;
}

.faq-question {
    color: var(--navy);
    font-weight: 700;
}

details .faq-question::after {
    color: var(--gold);
}

.faq-answer {
    color: #475569;
}

.faq .faq-item {
    background: #fff;
    border: var(--legacy-border);
    border-radius: 10px;
    padding: 20px 22px;
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.05);
    margin-bottom: 14px;
}

.faq .faq-item h4 {
    margin-top: 0;
    margin-bottom: 10px;
    color: var(--navy);
}

.related-articles {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 30px;
}

.related-link {
    border-radius: 8px;
    border-left-width: 3px;
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.05);
}

.article-cta {
    background: var(--navy);
    color: #fff;
    border-radius: 12px;
    padding: 40px 30px;
}

.article-cta h3,
.article-cta p {
    color: #fff;
}

.btn-gold,
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--gold);
    color: var(--navy);
    border-radius: 8px;
    padding: 15px 28px;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s ease, background 0.2s ease;
}

.btn-gold:hover,
.cta-button:hover {
    background: #b89120;
    color: var(--navy);
    transform: translateY(-2px);
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    overflow: hidden;
    border-radius: 12px;
    border: var(--legacy-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    background: #fff;
}

th {
    background: var(--navy);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.08);
}

td {
    border-color: #e8ecf2;
}

footer {
    background: #0d1524;
    color: #fff;
}

.footer-zones h3 {
    color: #fff;
}

.footer-zones li,
.footer-bottom,
footer p,
footer a {
    color: #e0e6ed;
}

@media (max-width: 768px) {
    .article-container {
        margin: 20px;
        padding: 30px 20px;
    }

    header nav {
        display: none;
    }

    .tarif-row {
        flex-direction: column;
        align-items: flex-start;
    }
}