/* Base Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--bg-color);
    padding: 30px;
    border-radius: 12px;
    max-width: 450px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 5px;
    border-radius: 4px;
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--text-color);
    background-color: var(--surface-color);
}

/* Welcome Modal */
.welcome-content {
    max-width: 550px;
    text-align: center;
}

.welcome-header {
    margin-bottom: 30px;
}

.welcome-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 10px;
    line-height: 1.2;
}

.welcome-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.welcome-body {
    text-align: left;
    margin-bottom: 30px;
}

.welcome-section {
    margin-bottom: 25px;
    padding: 20px;
    background-color: var(--surface-color);
    border-radius: 12px;
    border-left: 4px solid var(--accent-color);
}

.welcome-section:last-child {
    margin-bottom: 0;
}

.welcome-icon {
    font-size: 24px;
    margin-bottom: 10px;
    display: block;
}

.welcome-section h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.welcome-section p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0;
}

.welcome-section ul {
    margin: 12px 0 0 0;
    padding-left: 20px;
}

.welcome-section li {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.mode-examples, .difficulty-examples {
    margin-top: 12px;
}

.mode-example, .difficulty-example {
    background-color: var(--bg-color);
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 8px;
    font-size: 15px;
    line-height: 1.4;
}

.mode-example:last-child, .difficulty-example:last-child {
    margin-bottom: 0;
}

.mode-example strong, .difficulty-example strong {
    color: var(--accent-color);
    font-weight: 600;
}

.welcome-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.welcome-tip {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 15px;
    margin-bottom: 0;
}

/* Mode Switch Modal */
.mode-switch-content {
    text-align: center;
    margin: 20px 0;
}

.mode-switch-content p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.5;
}

.mode-switch-details {
    display: none;
}

.mode-switch-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 25px;
}

/* Help Modal */
.help-section {
    margin-bottom: 25px;
}

.help-section h3 {
    margin-bottom: 10px;
    color: var(--accent-color);
    font-size: 18px;
}

.help-section ul, .help-section ol {
    padding-left: 20px;
}

.help-section li {
    margin-bottom: 5px;
}

/* Stats Modal */
.stats-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin: 20px 0;
}

.stat-box {
    text-align: center;
    padding: 20px;
    background-color: var(--surface-color);
    border-radius: 8px;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    line-height: 1;
    color: var(--accent-color);
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 5px;
}

.difficulty-stats {
    margin-top: 30px;
}

.difficulty-stats h3 {
    margin-bottom: 15px;
    color: var(--accent-color);
}

.difficulty-breakdown {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.difficulty-stat {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    background-color: var(--surface-color);
    border-radius: 4px;
}

/* Settings Modal */
.settings-options {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 20px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: 10px;
    border-radius: 6px;
    transition: var(--transition);
}

.setting-item:hover {
    background-color: var(--surface-color);
}

.setting-description {
    font-size: 12px;
    color: var(--text-secondary);
    display: block;
    margin-top: 5px;
}

#difficulty-select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    width: 100%;
    max-width: 200px;
}

/* Completion Modal */
.completion-content {
    text-align: center;
}

.completion-content h2 {
    color: var(--accent-color);
    margin-bottom: 20px;
    font-size: 28px;
}

.completion-stats {
    margin: 20px 0;
}

.completion-stats p {
    margin: 10px 0;
    font-size: 18px;
}

.completion-performance {
    background-color: var(--surface-color);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

.completion-performance p {
    margin: 8px 0;
    font-size: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.completion-achievements {
    background-color: rgba(83, 141, 78, 0.1);
    border: 2px solid var(--accent-color);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
}

.completion-achievements h4 {
    color: var(--accent-color);
    margin-bottom: 10px;
    font-size: 16px;
}

.achievement-item {
    background-color: var(--bg-color);
    padding: 8px 12px;
    border-radius: 6px;
    margin: 5px 0;
    font-size: 14px;
    border-left: 4px solid var(--accent-color);
}

.completion-user-stats {
    margin: 20px 0;
}

.completion-user-stats h4 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-size: 16px;
}

.user-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.user-stat {
    text-align: center;
    padding: 10px;
    background-color: var(--surface-color);
    border-radius: 6px;
}

.user-stat .stat-value {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-color);
    line-height: 1;
}

.user-stat .stat-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

.completion-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin: 25px 0;
}

.share-btn {
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.share-btn:hover {
    background-color: #4a7c47;
    transform: translateY(-1px);
}

.next-puzzle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 20px;
}

/* Mobile responsive for modals */
@media (max-width: 600px) {
    .welcome-content {
        max-width: 100%;
    }
    
    .welcome-header h2 {
        font-size: 28px;
    }
    
    .welcome-subtitle {
        font-size: 16px;
    }
    
    .welcome-section {
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .welcome-section h3 {
        font-size: 18px;
    }
    
    .welcome-section p {
        font-size: 15px;
    }
    
    .welcome-section li {
        font-size: 14px;
    }
    
    .mode-example, .difficulty-example {
        font-size: 14px;
        padding: 10px 12px;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .stat-box {
        padding: 15px;
    }
    
    .stat-number {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    #difficulty-select {
        max-width: 100%;
        margin-top: 5px;
    }
}

@media (max-width: 400px) {
    .user-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .user-stat .stat-value {
        font-size: 18px;
    }
    
    .completion-performance p {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}