/* =========================================
   Base Card Styles
   ========================================= */
   .card {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* =========================================
   Language Selection Cards
   ========================================= */
.language-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.language-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: 1rem;
    padding: 2rem;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.language-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px -8px rgba(37, 99, 235, 0.2);
    border-color: #2563eb;
}

.language-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.flag {
    display: inline-block;
    font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.language-card:hover .flag {
    transform: scale(1.1);
}

.language-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

.language-native {
    font-size: 0.9rem;
    color: #64748b;
    margin-top: 0.5rem;
}

/* =========================================
   Level Selection Cards
   ========================================= */
.level-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.level-card {
    composes: card;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* =========================================
   Vocabulary Cards
   ========================================= */
.vocabulary-wrapper {
    position: relative;
    margin: 2rem 0;
    transition: min-height 0.3s ease-in-out;
}

.vocabulary-section {
    position: absolute;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease-in-out,
                visibility 0.3s ease-in-out,
                transform 0.3s ease-in-out;
}

.vocabulary-section.visible {
    position: relative;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.vocabulary-table {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border-collapse: separate;
    border-spacing: 0;
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease-in-out,
                transform 0.3s ease-in-out;
}

.visible .vocabulary-table {
    opacity: 1;
    transform: translateY(0);
}

.vocabulary-table th,
.vocabulary-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.vocabulary-table th {
    background: #f8faff;
    color: #1e293b;
    font-weight: 600;
}

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

/* =========================================
   Responsive Adjustments
   ========================================= */
@media (max-width: 768px) {
    .language-grid {
        grid-template-columns: 1fr;
        max-width: 300px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .level-container {
        padding: 0 var(--space-md);
    }
}

@media (max-width: 768px) {
    .language-card {
        padding: 1.25rem;
        border-radius: 0.75rem;
    }
    
    .language-icon {
        font-size: 2.5rem;
        margin-bottom: 0.75rem;
    }
    
    .language-name {
        font-size: 0.875rem;
    }
    
    .language-native {
        font-size: 0.75rem;
    }
    
    .flag-icon {
        width: 40px;
        height: 26px;
    }
}