/**
 * MYTHOLOGY NAVIGATION STYLES
 * Styling for nested mythology navigation (base <-> advanced)
 * Supports dark/light themes via CSS variables
 */

/* ============================================
   BACK TO BASE MYTHOLOGY LINK
   ============================================ */

.mythology-back-link {
    position: sticky;
    top: 60px; /* Below main header */
    left: 0;
    width: 100%;
    z-index: 998;
    background: linear-gradient(135deg,
        rgba(var(--color-primary-rgb), 0.15),
        rgba(var(--color-secondary-rgb), 0.15));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 2px solid rgba(var(--color-primary-rgb), 0.3);
    padding: var(--spacing-sm, 0.75rem) var(--spacing-lg, 1.5rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md, 1rem);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.back-to-base {
    display: flex;
    align-items: center;
    gap: var(--spacing-md, 1rem);
    text-decoration: none;
    color: var(--color-text-primary);
    transition: all var(--transition-base, 0.3s ease);
    padding: var(--spacing-sm, 0.75rem) var(--spacing-md, 1rem);
    border-radius: var(--radius-lg, 12px);
    background: rgba(var(--color-surface-rgb), 0.5);
    border: 2px solid transparent;
}

.back-to-base:hover {
    background: rgba(var(--color-primary-rgb), 0.2);
    border-color: var(--color-primary);
    transform: translateX(-4px);
}

.back-icon {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg,
        var(--color-primary),
        var(--color-secondary));
    border-radius: var(--radius-full, 50%);
    color: #fff;
    font-weight: bold;
}

.back-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.back-label {
    font-size: var(--font-size-xs, 0.75rem);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    font-weight: 600;
}

.back-name {
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: 700;
    color: var(--color-primary);
}

.current-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm, 0.5rem);
    padding: var(--spacing-sm, 0.75rem) var(--spacing-md, 1rem);
    background: rgba(var(--color-primary-rgb), 0.1);
    border-radius: var(--radius-lg, 12px);
    border: 2px solid rgba(var(--color-primary-rgb), 0.3);
}

.section-badge {
    font-size: var(--font-size-xs, 0.75rem);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.75rem;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-full, 50px);
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(var(--color-primary-rgb), 0.4);
}

.section-name {
    font-size: var(--font-size-md, 1rem);
    font-weight: 700;
    color: var(--color-text-primary);
}

/* ============================================
   ADVANCED SECTION CARD
   ============================================ */

.mythology-advanced-card {
    position: relative;
    background: linear-gradient(135deg,
        rgba(var(--color-primary-rgb), 0.08) 0%,
        rgba(var(--color-secondary-rgb), 0.08) 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 3px solid transparent;
    border-image: linear-gradient(135deg,
        var(--color-primary),
        var(--color-secondary)) 1;
    border-radius: var(--radius-xl, 16px);
    padding: var(--spacing-xl, 2rem);
    margin: var(--spacing-xl, 2rem) 0;
    overflow: hidden;
    box-shadow: var(--shadow-2xl, 0 25px 50px -12px rgba(0, 0, 0, 0.25)),
                0 0 40px rgba(var(--color-primary-rgb), 0.15);
    transition: all var(--transition-base, 0.3s ease);
}

.mythology-advanced-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle,
        rgba(var(--color-primary-rgb), 0.08) 0%,
        transparent 70%);
    animation: mythologyPulse 4s ease-in-out infinite;
    pointer-events: none;
}

@keyframes mythologyPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.4;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.7;
    }
}

.mythology-advanced-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl, 0 25px 50px -12px rgba(0, 0, 0, 0.3)),
                0 0 60px rgba(var(--color-primary-rgb), 0.3);
}

.advanced-badge {
    position: absolute;
    top: var(--spacing-md, 1rem);
    right: var(--spacing-md, 1rem);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg,
        rgba(var(--color-primary-rgb), 0.9),
        rgba(var(--color-secondary-rgb), 0.9));
    border-radius: var(--radius-full, 50px);
    font-size: var(--font-size-xs, 0.75rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #fff;
    box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.5);
    z-index: 1;
}

.badge-icon {
    font-size: 1rem;
}

.advanced-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md, 1rem);
    margin-bottom: var(--spacing-lg, 1.5rem);
    position: relative;
    z-index: 1;
}

.advanced-icon {
    font-size: 4rem;
    filter: drop-shadow(0 4px 12px rgba(var(--color-primary-rgb), 0.5));
}

.advanced-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0;
    background: linear-gradient(135deg,
        var(--color-primary),
        var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.advanced-description {
    font-size: var(--font-size-lg, 1.125rem);
    line-height: 1.8;
    color: var(--color-text-primary);
    margin: var(--spacing-lg, 1.5rem) 0;
    position: relative;
    z-index: 1;
}

.advanced-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md, 1rem);
    margin: var(--spacing-lg, 1.5rem) 0;
    position: relative;
    z-index: 1;
}

.highlight-item {
    background: rgba(var(--color-surface-rgb), 0.6);
    border: 2px solid rgba(var(--color-primary-rgb), 0.3);
    border-radius: var(--radius-md, 8px);
    padding: var(--spacing-sm, 0.75rem) var(--spacing-md, 1rem);
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--color-text-primary);
    transition: all var(--transition-fast, 0.2s ease);
}

.highlight-item:hover {
    background: rgba(var(--color-primary-rgb), 0.15);
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.advanced-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm, 0.75rem);
    background: linear-gradient(135deg,
        var(--color-primary),
        var(--color-secondary));
    color: #fff;
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: 700;
    padding: var(--spacing-md, 1rem) var(--spacing-xl, 2rem);
    border-radius: var(--radius-full, 50px);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-base, 0.3s ease);
    box-shadow: 0 4px 15px rgba(var(--color-primary-rgb), 0.4);
    position: relative;
    z-index: 1;
}

.advanced-button:hover {
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 8px 30px rgba(var(--color-primary-rgb), 0.6),
                0 0 40px rgba(var(--color-secondary-rgb), 0.4);
}

.button-arrow {
    font-size: 1.5rem;
    transition: transform var(--transition-fast, 0.2s ease);
}

.advanced-button:hover .button-arrow {
    transform: translateX(4px);
}

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

@media (max-width: 768px) {
    .mythology-back-link {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm, 0.5rem);
        padding: var(--spacing-sm, 0.75rem);
        top: 50px; /* Smaller header on mobile */
    }

    .back-to-base,
    .current-section {
        width: 100%;
        justify-content: center;
    }

    .mythology-advanced-card {
        padding: var(--spacing-lg, 1.5rem);
    }

    .advanced-badge {
        position: static;
        margin-bottom: var(--spacing-md, 1rem);
        justify-content: center;
    }

    .advanced-header {
        flex-direction: column;
        text-align: center;
    }

    .advanced-icon {
        font-size: 3rem;
    }

    .advanced-title {
        font-size: 1.8rem;
    }

    .advanced-highlights {
        grid-template-columns: 1fr;
    }

    .advanced-button {
        width: 100%;
        justify-content: center;
    }
}

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

@media (prefers-reduced-motion: reduce) {
    .mythology-advanced-card::before {
        animation: none;
    }

    .advanced-button:hover .button-arrow,
    .back-to-base:hover,
    .mythology-advanced-card:hover {
        transform: none;
    }
}

/* Focus states for keyboard navigation */
.back-to-base:focus,
.advanced-button:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 4px;
}