/* breadcrumb.css - Navigation fil d'Ariane optimisée et contextuelle */

/* ========================================
   BREADCRUMB NAVIGATION
======================================== */

.breadcrumb-nav {
    position: fixed;
    top: 30px;
    left: 30px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    z-index: 1000;
    padding: 6px 12px;
    border-radius: 50px;
    backdrop-filter: blur(15px);
    background: rgba(255, 255, 255, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
    max-width: calc(100vw - 140px); /* Laisse place au theme toggle */
}

.breadcrumb-nav:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    background: rgba(255, 255, 255, 0.35);
}

/* ========================================
   BREADCRUMB ELEMENTS
======================================== */

.breadcrumb-link {
    color: #64748b;
    text-decoration: none;
    transition: all 0.2s ease;
    padding: 2px 6px;
    border-radius: 6px;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.breadcrumb-link:hover {
    color: #6366f1;
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.breadcrumb-link:active {
    transform: translateY(0);
}

.breadcrumb-separator {
    color: #94a3b8;
    font-size: 0.9rem;
    user-select: none;
    margin: 0 2px;
    opacity: 0.6;
}

.breadcrumb-current {
    color: #475569;
    font-weight: 600;
    padding: 2px 6px;
    white-space: nowrap;
}

/* ========================================
   THEMATIC VARIATIONS
======================================== */

/* Lésions Oculaires - Rose */
body.section-lesions-oculaires .breadcrumb-nav {
    background: rgba(255, 107, 157, 0.15);
    border-color: rgba(255, 107, 157, 0.3);
}

body.section-lesions-oculaires .breadcrumb-link:hover {
    color: #ff6b9d;
    background: rgba(255, 107, 157, 0.15);
}

/* Se Tester - Bleu */
body.section-se-tester .breadcrumb-nav {
    background: rgba(79, 172, 254, 0.15);
    border-color: rgba(79, 172, 254, 0.3);
}

body.section-se-tester .breadcrumb-link:hover {
    color: #4facfe;
    background: rgba(79, 172, 254, 0.15);
}

/* Dysendocrinies - Vert */
body.section-dysendocrinies .breadcrumb-nav {
    background: rgba(67, 233, 123, 0.15);
    border-color: rgba(67, 233, 123, 0.3);
}

body.section-dysendocrinies .breadcrumb-link:hover {
    color: #43e97b;
    background: rgba(67, 233, 123, 0.15);
}

/* Mécanismes - Jaune */
body.section-mecanismes .breadcrumb-nav {
    background: rgba(234, 179, 8, 0.15);
    border-color: rgba(234, 179, 8, 0.3);
}

body.section-mecanismes .breadcrumb-link:hover {
    color: #eab308;
    background: rgba(234, 179, 8, 0.15);
}

/* ========================================
   NEUTRAL THEME - Home, À propos, etc.
======================================== */

body.home-page .breadcrumb-nav,
body.structure-page:not([class*="section-"]) .breadcrumb-nav {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.3);
}

body.home-page .breadcrumb-nav:hover,
body.structure-page:not([class*="section-"]) .breadcrumb-nav:hover {
    background: rgba(255, 255, 255, 0.35);
}

body.home-page .breadcrumb-link:hover,
body.structure-page:not([class*="section-"]) .breadcrumb-link:hover {
    color: #6366f1;
    background: rgba(99, 102, 241, 0.1);
}

/* ========================================
   DARK THEME ADJUSTMENTS
======================================== */

html.dark .breadcrumb-nav {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

html.dark .breadcrumb-nav:hover {
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

html.dark .breadcrumb-link {
    color: #94a3b8;
}

html.dark .breadcrumb-link:hover {
    color: #818cf8;
    background: rgba(129, 140, 248, 0.15);
}

html.dark .breadcrumb-separator {
    color: #64748b;
}

html.dark .breadcrumb-current {
    color: #cbd5e1;
}

/* Dark theme - Thematic variations */
html.dark body.section-lesions-oculaires .breadcrumb-nav {
    background: rgba(255, 107, 157, 0.1);
    border-color: rgba(255, 107, 157, 0.25);
}

html.dark body.section-lesions-oculaires .breadcrumb-link:hover {
    color: #ff8db4;
    background: rgba(255, 107, 157, 0.2);
}

html.dark body.section-se-tester .breadcrumb-nav {
    background: rgba(79, 172, 254, 0.1);
    border-color: rgba(79, 172, 254, 0.25);
}

html.dark body.section-se-tester .breadcrumb-link:hover {
    color: #6fc4ff;
    background: rgba(79, 172, 254, 0.2);
}

html.dark body.section-dysendocrinies .breadcrumb-nav {
    background: rgba(67, 233, 123, 0.1);
    border-color: rgba(67, 233, 123, 0.25);
}

html.dark body.section-dysendocrinies .breadcrumb-link:hover {
    color: #5ff095;
    background: rgba(67, 233, 123, 0.2);
}

html.dark body.section-mecanismes .breadcrumb-nav {
    background: rgba(234, 179, 8, 0.1);
    border-color: rgba(234, 179, 8, 0.25);
}

html.dark body.section-mecanismes .breadcrumb-link:hover {
    color: #facc15;
    background: rgba(234, 179, 8, 0.2);
}

/* Dark theme - Neutral pages */
html.dark body.home-page .breadcrumb-nav,
html.dark body.structure-page:not([class*="section-"]) .breadcrumb-nav {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

html.dark body.home-page .breadcrumb-nav:hover,
html.dark body.structure-page:not([class*="section-"]) .breadcrumb-nav:hover {
    background: rgba(255, 255, 255, 0.15);
}

html.dark body.home-page .breadcrumb-link:hover,
html.dark body.structure-page:not([class*="section-"]) .breadcrumb-link:hover {
    color: #818cf8;
    background: rgba(129, 140, 248, 0.15);
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */

@media (max-width: 1024px) {
    .breadcrumb-nav {
        max-width: calc(100vw - 120px);
        font-size: 0.8rem;
    }
}

@media (max-width: 768px) {
    .breadcrumb-nav {
        top: 20px;
        left: 20px;
        right: 80px;
        max-width: none;
        font-size: 0.75rem;
        padding: 4px 10px;
        gap: 3px;
        flex-wrap: wrap;
        line-height: 1.4;
    }
    
    .breadcrumb-link,
    .breadcrumb-current {
        padding: 1px 4px;
    }
    
    .breadcrumb-separator {
        font-size: 0.8rem;
        margin: 0 1px;
    }
}

@media (max-width: 480px) {
    .breadcrumb-nav {
        font-size: 0.7rem;
        padding: 3px 8px;
        gap: 2px;
    }
    
    .breadcrumb-link,
    .breadcrumb-current {
        padding: 1px 3px;
    }
}

/* ========================================
   ACCESSIBILITY
======================================== */

.breadcrumb-nav:focus-within {
    outline: 2px solid #6366f1;
    outline-offset: 2px;
}

.breadcrumb-link:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.3);
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .breadcrumb-nav,
    .breadcrumb-link {
        transition: none;
    }
}