/* ==========================================================================
   MEMOIRE ET PATRIMOINE CHAUNOIS (Association Loi 1901)
   Design System: Kinetic Swiss Editorial
   CSS Architecture & Responsive Framework
   ========================================================================== */

/* --- 1. CSS Variables & Typography Setup --- */
:root {
    --color-bg-canvas: #FAFAF9;
    --color-bg-surface: #FFFFFF;
    --color-bg-subtle: #F1F5F9;
    --color-border: #E2E8F0;
    --color-border-dark: #CBD5E1;
    --color-text-main: #0F172A;
    --color-text-muted: #475569;
    --color-text-slate: #64748B;
    --color-primary: #1E3A8A;
    --color-primary-dark: #172554;
    --color-primary-light: #DBEAFE;
    --color-accent: #C2410C;
    --color-accent-light: #FFEDD5;
    --color-success: #15803D;
    --color-success-light: #DCFCE7;
    
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-serif: 'Source Serif 4', Georgia, serif;
    --font-display: 'Space Grotesk', 'Plus Jakarta Sans', sans-serif;
    
    --container-max: 1200px;
    --transition-fast: 0.18s ease-in-out;
    --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-soft: 0 4px 20px rgba(15, 23, 42, 0.05);
    --shadow-elevated: 0 10px 30px rgba(15, 23, 42, 0.08);
}

/* --- 2. Universal Reset & Base Styles --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--color-bg-canvas);
    color: var(--color-text-main);
    font-family: var(--font-sans);
    line-height: 1.7;
    font-weight: 400;
    overflow-x: hidden;
}

body.no-scroll {
    overflow: hidden;
}

/* --- 3. Layout Grid & Structural Framing --- */
.site-container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}

.site-section {
    padding-top: 72px;
    padding-bottom: 72px;
    border-bottom: 1px solid var(--color-border);
}

.site-section-alt {
    background-color: var(--color-bg-surface);
}

.framed-grid {
    display: grid;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-surface);
}

/* --- 4. Top Utility Bar --- */
.utility-bar {
    background-color: var(--color-primary-dark);
    color: #E2E8F0;
    font-size: 0.8125rem;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.utility-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.utility-badge {
    background-color: var(--color-accent);
    color: #FFFFFF;
    text-transform: uppercase;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 2px 8px;
    border-radius: 4px;
    white-space: nowrap;
}

.utility-text {
    font-weight: 500;
    text-align: center;
    flex-grow: 1;
}

.utility-location {
    font-size: 0.75rem;
    color: #94A3B8;
    white-space: nowrap;
}

/* --- 5. Header & Navigation (Strict Flat Architecture) --- */
.site-header {
    background-color: var(--color-bg-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 84px;
    gap: 24px;
}

.brand-link {
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.brand-sub {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
}

.brand-title {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text-main);
    line-height: 1.15;
}

.brand-region {
    font-size: 0.75rem;
    color: var(--color-text-slate);
    font-weight: 500;
}

/* Navigation List */
.primary-nav .nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 8px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 10px 14px;
    border-radius: 6px;
    transition: color var(--transition-fast), background-color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    min-height: 44px;
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-subtle);
}

.nav-link.active {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

/* Action button in nav */
.nav-item-cta {
    margin-left: 8px;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
    padding: 8px;
    align-items: center;
    justify-content: center;
}

.hamburger-box {
    width: 22px;
    height: 16px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hamburger-bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-main);
    border-radius: 2px;
    transition: transform var(--transition-smooth);
}

/* --- 6. Typography & Headings --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--color-text-main);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

h1 {
    font-size: 2.85rem;
    margin-bottom: 20px;
}

h2 {
    font-size: 2.15rem;
    margin-top: 36px;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border);
}

h3 {
    font-size: 1.5rem;
    margin-top: 28px;
    margin-bottom: 12px;
}

h4 {
    font-size: 1.15rem;
    margin-top: 20px;
    margin-bottom: 8px;
}

p {
    margin-bottom: 18px;
    color: var(--color-text-muted);
}

p.lead {
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--color-text-main);
}

.hero-summary {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--color-text-main);
    padding: 16px 20px;
    background-color: #F8FAFC;
    border-left: 4px solid var(--color-primary);
    border-radius: 0 8px 8px 0;
    margin: 20px 0 28px 0;
}

/* --- 7. Buttons & Badges --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 700;
    text-decoration: none;
    padding: 12px 22px;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.25);
}

.btn-secondary {
    background-color: #FFFFFF;
    color: var(--color-text-main);
    border-color: var(--color-border-dark);
}

.btn-secondary:hover {
    background-color: var(--color-bg-subtle);
    border-color: var(--color-text-main);
}

.badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border-radius: 9999px;
    border: 1px solid transparent;
}

.badge-civic {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
    border-color: #BFDBFE;
}

.badge-accent {
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    border-color: #FED7AA;
}

.badge-success {
    background-color: var(--color-success-light);
    color: var(--color-success);
    border-color: #BBF7D0;
}

/* --- 8. Mandatory Image Styling & Figcaptions --- */
figure.documentary-photo {
    margin: 24px 0 28px 0;
}

figure.documentary-photo img {
    width: 100%;
    height: auto;
    max-height: 480px;
    border-radius: 12px;
    border: 1px solid #E5E7EB;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    margin: 20px 0 8px 0;
    object-fit: cover;
    display: block;
}

figure.documentary-photo figcaption {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-style: italic;
    color: #64748B;
    margin-bottom: 20px;
    line-height: 1.5;
    padding-left: 4px;
}

/* Hero Split Banner */
.hero-split {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-banner-img {
    width: 100%;
    height: 440px;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid #E5E7EB;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
}

/* --- 9. Mission Statement Dedicated Block --- */
.mission-highlight-card {
    background-color: #F8FAFC;
    border: 2px solid var(--color-primary);
    border-radius: 12px;
    padding: 36px 40px;
    margin: 40px 0;
    box-shadow: var(--shadow-soft);
    position: relative;
}

.mission-highlight-card::before {
    content: "OFFICIAL CHARTER";
    position: absolute;
    top: -12px;
    left: 36px;
    background-color: var(--color-primary);
    color: #FFFFFF;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 2px 10px;
    border-radius: 4px;
}

.mission-statement-text {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--color-text-main);
    margin-bottom: 12px;
}

.mission-word-audit {
    font-size: 0.8125rem;
    color: var(--color-text-slate);
    font-weight: 600;
    display: inline-block;
    border-top: 1px dashed var(--color-border);
    padding-top: 8px;
    width: 100%;
}

/* --- 10. Activity Cards Grid (Exact 4 Cards) --- */
.activity-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin: 36px 0;
}

.activity-card {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.activity-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-elevated);
    border-color: var(--color-border-dark);
}

.activity-card-header {
    margin-bottom: 16px;
}

.activity-num {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 4px;
    display: block;
}

.activity-card-title {
    font-size: 1.35rem;
    margin-top: 0;
    margin-bottom: 12px;
}

.activity-summary-text {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: 20px;
    flex-grow: 1;
}

.activity-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

/* --- 11. Tables & Financial Disclosures --- */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    margin: 28px 0;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background-color: #FFFFFF;
}

.audit-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9375rem;
}

.audit-table th {
    background-color: var(--color-bg-subtle);
    color: var(--color-text-main);
    font-family: var(--font-display);
    font-weight: 700;
    padding: 14px 18px;
    border-bottom: 2px solid var(--color-border);
}

.audit-table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.audit-table tr:last-child td {
    border-bottom: none;
}

.audit-table tr:hover td {
    background-color: #F8FAFC;
}

/* --- 12. Forms & Interactive Inputs --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 36px;
    margin-top: 32px;
}

.form-card {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--shadow-soft);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-main);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--color-text-main);
    background-color: #FFFFFF;
    border: 1px solid var(--color-border-dark);
    border-radius: 6px;
    min-height: 44px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.15);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.sidebar-card {
    background-color: #F8FAFC;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 24px;
}

/* --- 13. Dynamic Thank You Modal Window --- */
.modal-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(4px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-backdrop.modal-visible {
    display: flex;
}

.modal-dialog {
    background-color: #FFFFFF;
    border-radius: 16px;
    border: 1px solid var(--color-border);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    max-width: 580px;
    width: 100%;
    overflow: hidden;
    animation: modalSlideUp 0.25s ease-out;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 28px;
    border-bottom: 1px solid var(--color-border);
}

.modal-icon-badge {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--color-success-light);
    color: var(--color-success);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.15rem;
    margin-right: 12px;
}

.modal-title {
    font-size: 1.35rem;
    margin: 0;
    flex-grow: 1;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 1.75rem;
    line-height: 1;
    color: var(--color-text-slate);
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--color-text-main);
}

.modal-body {
    padding: 28px;
    font-size: 1rem;
    line-height: 1.65;
}

.modal-reassurance-box {
    margin-top: 18px;
    padding: 14px 18px;
    background-color: #F8FAFC;
    border-radius: 8px;
    border-left: 3px solid var(--color-success);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 28px;
    background-color: #F8FAFC;
    border-top: 1px solid var(--color-border);
}

/* --- 14. Footer Layout & Mandatory Legal Blocks --- */
.site-footer {
    background-color: #0F172A;
    color: #E2E8F0;
    border-top: 4px solid var(--color-primary);
    padding-top: 64px;
}

.footer-top-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 56px;
}

.footer-badge {
    background-color: var(--color-accent);
    color: #FFFFFF;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 12px;
}

.footer-heading {
    color: #FFFFFF;
    font-size: 1.35rem;
    margin-bottom: 14px;
}

.footer-desc {
    color: #94A3B8;
    font-size: 0.875rem;
    line-height: 1.65;
    margin-bottom: 18px;
}

.footer-reinvestment-callout {
    background-color: rgba(255, 255, 255, 0.06);
    border-left: 3px solid var(--color-accent);
    padding: 12px 16px;
    border-radius: 0 6px 6px 0;
    margin-bottom: 20px;
}

.reinvestment-text {
    color: #CBD5E1;
    font-size: 0.8125rem;
    margin-bottom: 0;
}

.footer-reg-details {
    font-size: 0.8125rem;
    color: #64748B;
    line-height: 1.7;
}

.footer-reg-details strong {
    color: #94A3B8;
}

.footer-col-title {
    color: #FFFFFF;
    font-size: 1.05rem;
    margin-bottom: 18px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-nav-list {
    list-style: none;
}

.footer-nav-link {
    display: inline-block;
    color: #94A3B8;
    text-decoration: none;
    font-size: 0.875rem;
    padding: 6px 0;
    min-height: 36px;
    transition: color var(--transition-fast);
}

.footer-nav-link:hover {
    color: #FFFFFF;
    text-decoration: underline;
}

.footer-legal-bar {
    background-color: #020617;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0 28px 0;
}

.legal-statement-box {
    margin-bottom: 16px;
}

.legal-mandatory-text {
    font-size: 0.8125rem;
    color: #94A3B8;
    line-height: 1.6;
    margin-bottom: 0;
}

.copyright-line p {
    font-size: 0.75rem;
    color: #64748B;
    margin-bottom: 0;
}

/* --- 15. Responsive Breakpoints (<992px & <768px) --- */
@media (max-width: 992px) {
    .hero-split {
        grid-template-columns: 1fr;
    }
    .hero-banner-img {
        height: 340px;
    }
    .footer-top-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-col-intro {
        grid-column: span 2;
    }
    .activity-grid {
        grid-template-columns: 1fr;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.1rem;
    }
    h2 {
        font-size: 1.65rem;
    }
    h3 {
        font-size: 1.3rem;
    }
    .site-section {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    /* Mobile Navigation Drawer */
    .mobile-toggle {
        display: flex;
    }

    .primary-nav {
        position: fixed;
        top: 84px;
        left: 0;
        width: 100%;
        height: calc(100vh - 84px);
        background-color: var(--color-bg-surface);
        border-top: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform var(--transition-smooth), opacity var(--transition-smooth);
        overflow-y: auto;
        padding: 24px;
    }

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

    .primary-nav .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .nav-link {
        font-size: 1.05rem;
        padding: 12px 16px;
        border-bottom: 1px solid var(--color-border);
        border-radius: 0;
    }

    .nav-item-cta {
        margin-left: 0;
        margin-top: 12px;
    }

    .nav-btn {
        width: 100%;
    }

    .footer-top-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .footer-col-intro {
        grid-column: span 1;
    }

    .utility-inner {
        flex-direction: column;
        text-align: center;
        gap: 6px;
    }

    .mission-highlight-card {
        padding: 28px 20px;
    }
}