/* Lesson 1.4: Present Tense - Styles */

/* Grammar Explanation Box */
.grammar-explanation {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(33, 150, 243, 0.15);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.08);
}

.explanation-title {
    font-size: 1.3rem;
    color: #1565c0;
    margin-bottom: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.explanation-content {
    color: #37474f;
    line-height: 1.7;
    font-size: 1rem;
}

.explanation-content p {
    margin-bottom: 1rem;
}

.explanation-content p:last-child {
    margin-bottom: 0;
}

.explanation-content strong {
    color: #0d47a1;
    font-weight: 600;
}

.explanation-content em {
    color: #455a64;
    font-style: italic;
}

.explanation-content ul {
    margin: 0.75rem 0 0.75rem 1.5rem;
    list-style-type: none;
}

.explanation-content li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.25rem;
}

.explanation-content li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: #2196f3;
    font-weight: bold;
}

/* Verb Display Section */
.verb-showcase {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.verb-title {
    font-size: 2.5rem;
    color: #0066ff;
    margin-bottom: 0.5rem;
    font-weight: 700;
    font-family: 'GFS Neohellenic', 'Times New Roman', serif;
}

.verb-meaning {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 1.5rem;
}

.verb-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
}

.verb-detail {
    text-align: center;
}

.verb-detail-label {
    font-size: 0.8rem;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.verb-detail-value {
    font-size: 1.1rem;
    color: #333;
    font-weight: 600;
}

/* Conjugation Table */
.conjugation-section {
    margin-bottom: 2rem;
}

.conjugation-table {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.conjugation-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.column-header {
    text-align: center;
    font-weight: 600;
    color: #0066ff;
    font-size: 1.1rem;
    padding: 0.5rem;
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.conjugation-card {
    background: white;
    border-radius: 12px;
    padding: 1.25rem;
    border: 1px solid rgba(0, 0, 0, 0.08);
    transition: all 0.2s ease;
    cursor: pointer;
}

.conjugation-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: #0066ff;
}

.person-label {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.greek-form {
    font-size: 1.4rem;
    color: #0066ff;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-family: 'GFS Neohellenic', 'Times New Roman', serif;
}

.english-translation {
    font-size: 0.95rem;
    color: #333;
    font-style: italic;
}

/* Special Section for Movable Nu */
.special-section {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: 16px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.special-section h4 {
    color: #856404;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.special-section p {
    color: #856404;
    line-height: 1.6;
}

/* Common Verbs Section */
.common-verbs-section {
    background: #f8f9fa;
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.common-verbs-section p {
    color: #555;
    margin-bottom: 1.5rem;
}

.common-verbs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.common-verb-item {
    background: white;
    border-radius: 8px;
    padding: 1rem;
    border: 1px solid rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.2s ease;
}

.common-verb-item:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-color: #0066ff;
}

.verb-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: #0066ff;
    color: white;
    border-radius: 50%;
    font-weight: 600;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.verb-greek {
    font-family: 'GFS Neohellenic', 'Times New Roman', serif;
    font-size: 1.1rem;
    color: #0066ff;
    font-weight: 600;
    min-width: 80px;
}

.verb-meaning {
    color: #333;
    font-size: 0.95rem;
}

/* Verb Practice Section */
.verb-practice-section {
    background: #fafafa;
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.verb-practice-section p {
    color: #666;
    margin-bottom: 1rem;
}

.verb-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.verb-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid rgba(0, 0, 0, 0.08);
    transition: all 0.2s ease;
    cursor: pointer;
    text-align: center;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.verb-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: rgba(0, 102, 255, 0.2);
}

.verb-greek {
    font-size: 1.3rem;
    color: #0066ff;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-family: 'GFS Neohellenic', 'Times New Roman', serif;
}

.verb-translation {
    animation: fadeIn 0.3s ease;
}

.verb-english {
    font-size: 1rem;
    color: #333;
    margin-bottom: 0.25rem;
}

.verb-person {
    font-size: 0.85rem;
    color: #666;
    font-style: italic;
}

.verb-hint {
    font-size: 0.8rem;
    color: #999;
    font-style: italic;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Comparison Section */
.comparison-section {
    background: #e8f5e8;
    border: 2px solid #28a745;
    border-radius: 16px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.comparison-section h4 {
    color: #155724;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.comparison-section p {
    color: #155724;
    line-height: 1.6;
}

/* Grammar Tips Box */
.tips-box {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 16px;
    padding: 1.5rem;
    margin-top: 2rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.tips-title {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tips-content {
    color: #555;
    line-height: 1.6;
}

.tips-content ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

.tips-content li {
    margin-bottom: 0.5rem;
}

/* Summary Section */
.summary-section {
    margin-bottom: 2rem;
}

.summary-box {
    background: linear-gradient(135deg, #e8f5e8 0%, #f0f8f0 100%);
    border: 2px solid #28a745;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.summary-box ul {
    margin: 0;
    padding-left: 1.5rem;
}

.summary-box li {
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

/* Responsive Design */
@media (max-width: 768px) {
    .conjugation-table {
        grid-template-columns: 1fr;
    }
    
    .common-verbs-grid {
        grid-template-columns: 1fr;
    }
    
    .verb-grid {
        grid-template-columns: 1fr;
    }
    
    .verb-info {
        flex-direction: column;
        gap: 1rem;
    }
}