/* ================================
   CSS VARIABLES & THEME SYSTEM
   ================================ */

:root {
    /* Light Theme (Default) */
    --primary: #8b5cf6;
    --primary-dark: #1d4ed8;
    --secondary: #10b981;
    --accent: #8b5cf6;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #e2e8f0;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-light: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --code-bg: #1e293b;
    --code-text: #10b981;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

/* Dark Theme */
[data-theme="dark"] {
    --primary: #8b5cf6;
    --primary-dark: #2563eb;
    --secondary: #10b981;
    --accent: #a78bfa;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-light: #94a3b8;
    --border: #334155;
    --success: #10b981;
    --error: #f87171;
    --warning: #f59e0b;
    --info: #60a5fa;
    --code-bg: #1e293b;
    --code-text: #10b981;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-lg: rgba(0, 0, 0, 0.5);
}

/* ================================
   BREADCRUMB COMPONENT - Complete
   ================================ */

.breadcrumb-container {
    max-width: 1400px;
    margin: 2rem auto 1rem; /* 2rem top, 1rem bottom for good spacing */
    padding: 0 1rem;
    width: 100%;
    box-sizing: border-box;
    animation: slideDown 0.4s ease-out;
    position: relative;
    z-index: 10;
    box-shadow: none;
}

/* Optional subtle separation line (can be removed if not needed) 
.breadcrumb-container::before {
    content: '';
    position: absolute;
    top: -0.75rem; /* Position above breadcrumb 
    left: 1rem;
    right: 1rem;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--border) 20%, 
        var(--border) 80%, 
        transparent
    );
    opacity: 0.6;
} */

/* Remove the line on very small screens */
@media (max-width: 768px) {
    .breadcrumb-container::before {
        display: none;
    }
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    margin: 0;
    list-style: none;
    font-size: 0.9rem;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: 0 2px 8px var(--shadow);
    position: relative;
    overflow: hidden;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 2;
}

.breadcrumb-item:not(:last-child)::after {
    content: '›';
    margin-left: 0.5rem;
    margin-right: 0.5rem;
    color: var(--text-light);
    font-weight: normal;
    font-size: 1rem;
    opacity: 0.7;
    transition: none;  /* ← ADD THIS */
    display: inline-block;  /* ← ADD THIS for better stability */
}

.breadcrumb-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    white-space: nowrap;
    font-weight: normal;  /* ← Add this for consistency */
    box-sizing: border-box; 
}

.breadcrumb-link:hover {
    background: linear-gradient(135deg, 
        rgba(139, 92, 246, 0.1), 
        rgba(16, 185, 129, 0.1)
    );
    border: 1px solid var(--primary);
    color: var(--accent)
}

.breadcrumb-link:hover i{
    color: var(--primary);
    font-size: 0.85rem;
}

.breadcrumb-link i {
    font-size: 0.85rem;
}

.breadcrumb-current {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
    padding: 0.5rem 0.75rem;
    background: linear-gradient(135deg, 
        rgba(139, 92, 246, 0.1), 
        rgba(16, 185, 129, 0.1)
    );
    border-radius: var(--radius-sm);
    border: 1px solid var(--primary);
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.breadcrumb-current i {
    color: var(--primary);
    font-size: 0.85rem;
}

/* Special styling for challenge page */
#breadcrumb-challenge-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 300px;
    display: inline-block;
}

/* Dark theme adjustments */
[data-theme="dark"] .breadcrumb {
    background: var(--bg-secondary);
    border-color: var(--border);
}

[data-theme="dark"] .breadcrumb-link {
    background: var(--bg-tertiary);
    border-color: var(--border);
}

[data-theme="dark"] .breadcrumb-current {
    background: linear-gradient(135deg, 
        rgba(139, 92, 246, 0.2), 
        rgba(16, 185, 129, 0.15)
    );
    border-color: var(--primary);
}

[data-theme="dark"] .breadcrumb-item:not(:last-child)::after {
    color: var(--text-light);
}

/* Animation */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive design */
@media (max-width: 1200px) {
    .breadcrumb-container {
        padding: 0 20px;
        margin: 1.75rem auto 0.75rem;
    }
}

@media (max-width: 768px) {
    .breadcrumb-container {
        padding: 0 15px;
        margin: 1.5rem auto 0.75rem;
    }
    
    .breadcrumb {
        padding: 0.6rem 0.75rem;
        gap: 0.25rem;
        font-size: 0.85rem;
        border-radius: var(--radius-sm);
    }
    
    .breadcrumb-link,
    .breadcrumb-current {
        padding: 0.4rem 0.6rem;
    }
    
    #breadcrumb-challenge-title {
        max-width: 200px;
    }
    
    /* Mobile icons mode */
    .breadcrumb-mobile-icons .breadcrumb-link span:not(.fas),
    .breadcrumb-mobile-icons .breadcrumb-current span:not(.fas) {
        display: none;
    }
    
    .breadcrumb-mobile-icons .breadcrumb-link,
    .breadcrumb-mobile-icons .breadcrumb-current {
        padding: 0.4rem;
    }
    
    .breadcrumb::before {
        height: 2px;
    }
}

@media (max-width: 480px) {
    .breadcrumb-container {
        margin: 1.25rem auto 0.5rem;
        padding: 0 10px;
    }
    
    .breadcrumb {
        padding: 0.5rem;
        font-size: 0.8rem;
        gap: 0.2rem;
    }
    
    .breadcrumb-link,
    .breadcrumb-current {
        padding: 0.35rem 0.5rem;
    }
    
    .breadcrumb-link i,
    .breadcrumb-current i {
        font-size: 0.8rem;
    }
    
    .breadcrumb-item:not(:last-child)::after {
        margin-left: 0.25rem;
        font-size: 0.9rem;
    }
    
    #breadcrumb-challenge-title {
        max-width: 150px;
    }
}

@media (max-width: 360px) {
    .breadcrumb-container {
        margin: 1rem auto 0.25rem;
    }
    
    #breadcrumb-challenge-title {
        max-width: 120px;
    }
    
    .breadcrumb {
        padding: 0.4rem;
    }
}

/* If you want to simplify and remove decorative elements,
   use this minimalist version instead: */

/*
.breadcrumb-container {
    max-width: 1400px;
    margin: 2rem auto 1rem;
    padding: 0 1rem;
    width: 100%;
    box-sizing: border-box;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0;
    margin: 0;
    list-style: none;
    font-size: 0.9rem;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb-item:not(:last-child)::after {
    content: '›';
    margin-left: 0.5rem;
    color: var(--text-light);
    font-weight: 600;
    font-size: 1rem;
}

.breadcrumb-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    transition: color 0.3s ease;
}

.breadcrumb-link:hover {
    color: var(--primary);
}

.breadcrumb-current {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
    padding: 0.25rem 0.5rem;
}

.breadcrumb-current i {
    color: var(--primary);
}
*/