/* ==========================================================================
   CYPRIEN EKRA — ATLAS DE LA CYBERSÉCURITÉ EN AFRIQUE
   Design System Global & Styles Partagés
   ========================================================================== */

:root {
    /* Palette Principale (Conforme description_site.txt & CDC) */
    --color-navy-dark: #031426;      /* rgb(3, 20, 38) - Bleu Nuit Souverain */
    --color-navy-deep: #020b16;      /* Arrière-plan sombre profond */
    --color-navy-mid: #093c72;       /* rgb(9, 60, 114) - Bleu Intermédiaire */
    --color-navy-light: #0f64be;     /* rgb(15, 100, 190) - Bleu Vif */
    --color-navy-grid: #1c2b3a;      /* Lignes de quadrillage technique */
    
    /* Nuances Marron Cuivré / Accent Sahélien */
    --color-copper: #a07659;         /* rgb(160, 118, 89) - Accent Principal */
    --color-copper-dark: #533d2e;    /* rgb(83, 61, 46) */
    --color-copper-mid: #9f7558;     /* rgb(159, 117, 88) */
    --color-copper-light: #ebad82;   /* rgb(235, 173, 130) */
    --color-copper-glow: rgba(160, 118, 89, 0.25);

    /* Surfaces & Neutres */
    --color-surface-light: #f9f8f6;  /* Crème éditorial clair */
    --color-surface-dark: #07192d;   /* Surface de carte sombre */
    --color-surface-dim: #8b9bb4;    /* Texte atténué technique */
    --color-text-white: #ffffff;
    --color-text-body: #e6eef8;
    --color-text-muted: #9bb0c7;
    --color-border-subtle: rgba(139, 155, 180, 0.2);
    --color-border-active: rgba(160, 118, 89, 0.5);

    /* Statuts sémantiques & Charte ADSG (Violet, Orange, Bleu, Blanc) */
    --color-adsg-violet: #7c3aed;
    --color-adsg-violet-light: #c4b5fd;
    --color-adsg-violet-bg: rgba(124, 58, 237, 0.18);
    --color-adsg-violet-border: rgba(124, 58, 237, 0.45);
    --color-success: #7c3aed;        /* Remplacement charte ADSG */
    --color-warning: #FFC700;        /* Échéances / Délais */
    --color-error: #FF4B4B;

    /* Typographies */
    --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-editorial: 'Noto Serif', Georgia, serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-signature: 'Caveat', cursive;

    /* Layout & Rythme */
    --container-max-width: 1240px;
    --header-height: 80px;
    --radius-none: 0px;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 12px;
    --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 250ms ease-out;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-navy-dark);
    color: var(--color-text-body);
}

body {
    min-height: 100vh;
    font-family: var(--font-heading);
    line-height: 1.6;
    background-color: var(--color-navy-dark);
    color: var(--color-text-body);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Accessibilité focus */
a:focus-visible, button:focus-visible {
    outline: 2px solid var(--color-copper-light);
    outline-offset: 3px;
}

/* Conteneurs standards */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================================================
   Header & Navigation Universelle
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(3, 20, 38, 0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-subtle);
    transition: background var(--transition-smooth), border-color var(--transition-smooth);
}

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--color-text-white);
    text-transform: uppercase;
}

.brand-sub {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-copper-light);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.925rem;
    font-weight: 600;
    color: var(--color-text-muted);
    letter-spacing: 0.5px;
    position: relative;
    padding: 8px 0;
}

.nav-link:hover {
    color: var(--color-text-white);
}

.nav-link.active {
    color: var(--color-text-white);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-copper);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-copper);
    color: var(--color-text-white);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    padding: 10px 20px;
    border-radius: var(--radius-none);
    border: 1px solid var(--color-copper-mid);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-cta:hover {
    background: var(--color-copper-dark);
    transform: translateY(-1px);
}

/* Mobile Toggle */
.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 32px;
    height: 24px;
    padding: 0;
    background: transparent;
    z-index: 101;
}

.mobile-nav-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-white);
    transition: all var(--transition-fast);
}

/* ==========================================================================
   Boutons & Éléments Partagés
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    padding: 14px 28px;
    border-radius: var(--radius-none);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.btn-primary {
    background-color: var(--color-copper);
    color: var(--color-text-white);
    border: 1px solid var(--color-copper-mid);
}

.btn-primary:hover {
    background-color: var(--color-copper-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-white);
    border: 1px solid var(--color-surface-dim);
}

.btn-secondary:hover {
    background-color: rgba(139, 155, 180, 0.12);
    border-color: var(--color-text-white);
    color: var(--color-text-white);
}

.btn-accent {
    background-color: var(--color-navy-mid);
    color: var(--color-text-white);
    border: 1px solid var(--color-navy-light);
}

.btn-accent:hover {
    background-color: var(--color-navy-light);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: var(--radius-none);
}

.badge-copper {
    background: rgba(160, 118, 89, 0.15);
    color: var(--color-copper-light);
    border: 1px solid var(--color-copper);
}

.badge-blue {
    background: rgba(9, 60, 114, 0.3);
    color: #64b5f6;
    border: 1px solid var(--color-navy-mid);
}

.badge-success {
    background: var(--color-adsg-violet-bg);
    color: var(--color-adsg-violet-light);
    border: 1px solid var(--color-adsg-violet-border);
}

/* ==========================================================================
   Footer Universel
   ========================================================================== */

.site-footer {
    background: var(--color-navy-deep);
    border-top: 1px solid var(--color-border-subtle);
    padding: 60px 0 30px;
    color: var(--color-text-muted);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .brand-title {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 480px;
    margin-bottom: 16px;
    color: var(--color-text-muted);
}

.footer-legal-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-copper-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-col h4 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text-white);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 18px;
}

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

.footer-links a {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.footer-links a:hover {
    color: var(--color-copper-light);
    padding-left: 4px;
}

.footer-contact-item {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.footer-contact-item a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-contact-item a:hover {
    color: var(--color-copper-light);
    text-decoration: underline;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    gap: 16px;
    font-size: 0.8rem;
    color: var(--color-surface-dim);
}

.footer-legal-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-legal-links {
    font-size: 0.75rem;
    color: var(--color-surface-dim);
    opacity: 0.85;
}

.footer-legal-links a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-legal-links a:hover {
    color: var(--color-copper-light);
    text-decoration: underline;
}

.footer-credits-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding-top: 12px;
    border-top: 1px dashed rgba(255, 255, 255, 0.05);
}

.credits-label {
    font-size: 0.78rem;
    color: var(--color-surface-dim);
    letter-spacing: 0.2px;
}

.creator-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(9, 60, 114, 0.25);
    border: 1px solid rgba(160, 118, 89, 0.35);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text-body);
    font-size: 0.78rem;
    transition: all var(--transition-smooth);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.creator-badge:hover {
    background: rgba(160, 118, 89, 0.18);
    border-color: var(--color-copper-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(160, 118, 89, 0.28);
}

.creator-name {
    font-weight: 700;
    color: var(--color-copper-light);
    letter-spacing: 0.3px;
    transition: color var(--transition-fast);
}

.creator-badge:hover .creator-name {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(235, 173, 130, 0.6);
}

.creator-badge-role {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--color-text-muted);
    padding-left: 8px;
    border-left: 1px solid rgba(255, 255, 255, 0.15);
    transition: all var(--transition-fast);
}

.creator-badge:hover .creator-badge-role {
    color: var(--color-text-body);
    border-left-color: rgba(235, 173, 130, 0.5);
}

.creator-arrow {
    stroke: var(--color-copper-light);
    transition: transform var(--transition-fast), stroke var(--transition-fast);
    flex-shrink: 0;
}

.creator-badge:hover .creator-arrow {
    transform: translate(2px, -2px);
    stroke: #ffffff;
}

/* ==========================================================================
   Responsive Global
   ========================================================================== */

@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .mobile-nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--color-navy-dark);
        border-bottom: 2px solid var(--color-navy-mid);
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        gap: 20px;
        transform: translateY(-120%);
        transition: transform var(--transition-smooth);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
    }

    .nav-menu.open {
        transform: translateY(0);
    }

    .nav-link {
        font-size: 1.1rem;
        width: 100%;
    }

    .nav-cta {
        width: 100%;
    }

    .footer-legal-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

@media (max-width: 640px) {
    .footer-credits-row {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 8px;
        width: 100%;
    }

    .creator-badge {
        width: 100%;
        justify-content: center;
        padding: 8px 14px;
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .creator-badge-role {
        border-left: none;
        padding-left: 0;
        display: block;
        width: 100%;
        margin-top: 2px;
        text-align: center;
    }
}