/* Chat Page Styles */
.chat-page {
    padding: 20px;
    margin: 0 auto;
    height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
}

/* Groups List Container */
.groups-list-container {
    flex: 1;
    overflow-y: auto;
}

.page-header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 20px;
}

.page-header h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.page-description {
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.refresh-button {
    background: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 auto;
    transition: background-color 0.2s;
}

.refresh-button:hover:not(:disabled) {
    background: #0056b3;
}

.refresh-button:disabled {
    background: #6c757d;
    cursor: not-allowed;
}

.refresh-button i {
    animation: none;
}

.refresh-button:disabled i {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border: 1px solid #f5c6cb;
    border-radius: 6px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.error-message i {
    color: #dc3545;
}

.loading-container {
    text-align: center;
    padding: 60px 20px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.loading-container p {
    color: #666;
    font-size: 1.1rem;
}

/* Overview Stats */
.overview-stats {
    margin-bottom: 40px;
}

.overview-stats h2 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 10px;
    color: #007bff;
}

.stat-content h3 {
    font-size: 1.8rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.stat-content p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

/* Groups List */
.groups-list {
    margin-top: 40px;
}

.groups-list h2 {
    font-size: 1.6rem;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.group-count {
    color: #666;
    font-size: 1rem;
    font-weight: normal;
}

/* Groups List Grid */
.groups-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 12px;
    padding: 0;
    width: 100%;
}

.group-card {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    width: 280px;
    flex-grow: 0;
    flex-shrink: 0;
}

.group-card.clickable {
    cursor: pointer;
}

.group-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.group-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.group-name {
    font-size: 1.2rem;
    font-weight: bold;
    color: #333;
    margin: 0;
    flex: 1;
    word-break: break-word;
}

.group-id {
    background: #f8f9fa;
    color: #6c757d;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-left: 10px;
}

.group-image {
    margin-bottom: 15px;
    text-align: center;
}

.group-image img {
    max-width: 100%;
    max-height: 150px;
    border-radius: 6px;
    object-fit: cover;
}

.group-description {
    color: #555;
    font-size: 0.9rem;
    line-height: 1.4;
    margin-bottom: 15px;
}

.group-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: #666;
}

.stat-item i {
    color: #007bff;
}

.group-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 15px;
}

.tag {
    background: #e3f2fd;
    color: #1976d2;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.group-meta {
    display: none;
}

.meta-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.meta-item:last-child {
    margin-bottom: 0;
}

.meta-item label {
    color: #666;
    font-weight: 500;
}

.meta-item span {
    color: #333;
}

.creator-address {
    font-family: monospace;
    background: #f8f9fa;
    padding: 2px 6px;
    border-radius: 3px;
    cursor: help;
}

.enter-chat-hint {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e0e0e0;
    text-align: center;
    color: #007bff;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #ccc;
}

.empty-state p {
    font-size: 1.1rem;
}

/* Chat Room Styles */
.chat-room-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: #f8f9fa;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.chat-room-header {
    background: white;
    border-bottom: 2px solid #e0e0e0;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.header-left .back-button {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #007bff;
    background: none;
    border: none;
    padding: 8px 15px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.header-left .back-button:hover {
    background: #f8f9fa;
}

.group-title {
    text-align: center;
    flex: 1;
}

.group-title h1 {
    font-size: 1.8rem;
    color: #333;
    margin: 0 0 5px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.group-title .group-description {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    max-height: calc(100vh - 200px); /* Reserve space for header and input area */
}

.messages-area {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8f9fa;
    max-height: calc(100vh - 300px); /* Fixed maximum height for messages area */
    min-height: 300px; /* Minimum height to ensure usability */
}

.empty-messages {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.empty-messages i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #ccc;
}

.empty-messages p {
    font-size: 1.1rem;
    margin: 10px 0;
}

.empty-messages .hint {
    font-size: 0.9rem;
    color: #999;
}

.messages-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 800px;
    margin: 0 auto;
}

.message-item {
    background: white;
    border-radius: 12px;
    padding: 15px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    max-width: 80%;
    align-self: flex-start;
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 0.8rem;
}

.sender {
    font-weight: bold;
    color: #007bff;
    font-family: monospace;
}

.timestamp {
    color: #666;
}

.message-content {
    color: #333;
    line-height: 1.4;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.message-meta {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid #f0f0f0;
}

.memo-amount {
    font-size: 0.8rem;
    color: #f39c12;
    display: flex;
    align-items: center;
    gap: 4px;
}

.message-input-area {
    background: white;
    border-top: 2px solid #e0e0e0;
    padding: 20px;
    flex-shrink: 0;
    min-height: 100px;
    width: 100%; /* Ensure full width */
    max-width: 800px;
    margin: 0 auto;
}

.input-container {
    display: flex;
    gap: 15px;
    align-items: center;
    max-width: none; /* Remove max-width restriction */
    width: 100%; /* Use full width */
    margin: 0;
    padding: 0; /* Remove padding that was reducing width */
}

.message-input {
    flex: 1;
    min-height: 50px;
    max-height: 200px;
    padding: 12px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    resize: none;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.4;
    outline: none;
    transition: border-color 0.2s;
    width: 100%;
    min-width: 0;
    overflow-y: hidden;
    transition: height 0.1s ease;
}

.message-input:focus {
    border-color: #007bff;
}

.message-input:disabled {
    background: #f8f9fa;
    color: #6c757d;
    cursor: not-allowed;
    border-color: #dc3545; 
}

.message-input:disabled::placeholder {
    color: #dc3545;
    font-weight: 500;
}

.send-button {
    width: 50px;
    height: 50px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
    flex-shrink: 0;
    font-size: 18px;
}

.send-button:hover:not(:disabled) {
    background: #0056b3;
}

.send-button:disabled {
    background: #6c757d;
    cursor: not-allowed;
}

/* for disabled send button */
.send-button:disabled:hover {
    background: #6c757d;
}

.send-button .spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* message content wrapper - for relative positioning */
.message-content-wrapper {
    position: relative;
    margin-bottom: 8px;
}

/* message status displayed in bottom right corner */
.message-status-corner {
    position: absolute;
    bottom: 4px;
    right: 8px;
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Failed status - red with warning styling */
.status-failed {
    color: #dc3545; /* Bootstrap danger red */
    background-color: rgba(220, 53, 69, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(220, 53, 69, 0.3);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Timeout status - orange/amber styling */
.status-timeout {
    color: #fd7e14; /* Bootstrap warning orange */
    background-color: rgba(253, 126, 20, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(253, 126, 20, 0.3);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Retry button styling */
.retry-button {
    background: transparent;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 2px 4px;
    margin-left: 4px;
    border-radius: 3px;
    font-size: 9px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 2px;
    transition: background-color 0.2s ease;
}

.retry-button:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.retry-button i {
    font-size: 8px;
}

/* Update existing status styles to include icons properly */
.status-sending {
    color: #dc3545; /* Bootstrap danger red */
    background-color: rgba(220, 53, 69, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(220, 53, 69, 0.3);
    display: flex;
    align-items: center;
    gap: 4px;
}

.status-sent {
    color: #28a745; /* Bootstrap success green */
    background-color: rgba(40, 167, 69, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(40, 167, 69, 0.3);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Icon styling within status spans */
.status-sending i,
.status-sent i,
.status-failed i,
.status-timeout i {
    font-size: 8px;
}

/* when message is sending, the whole message box is slightly transparent */
.message-item.message-sending {
    opacity: 0.8;
}

/* ensure message content has enough right margin, avoid overlapping with status label */
.message-content {
    padding-right: 60px; /* leave space for status label */
    min-height: 20px; /* ensure even short messages have enough height to display status */
}

/* Current user messages - align to the right with light green background */
.message-item.message-current-user {
    align-self: flex-end;
    background: #d4edda; /* Light green background */
    border: 1px solid #c3e6cb;
}

.message-item.message-current-user .sender {
    color: #155724; /* Darker green for current user sender text */
}

.message-item.message-current-user .message-content {
    color: #155724; /* Darker green for message content */
}

/* Ensure current user messages have proper max-width */
.message-item.message-current-user {
    max-width: 80%;
}

/* Responsive Design updates */
@media (min-width: 1800px) {
    .group-card {
        width: 260px;
    }
}

@media (min-width: 1400px) and (max-width: 1799px) {
    .group-card {
        width: 270px;
    }
}

@media (min-width: 1200px) and (max-width: 1399px) {
    .group-card {
        width: 280px;
    }
}

@media (min-width: 1000px) and (max-width: 1199px) {
    .group-card {
        width: 270px;
    }
}

@media (min-width: 800px) and (max-width: 999px) {
    .group-card {
        width: calc(33.333% - 8px);
        min-width: 240px;
    }
}

@media (min-width: 600px) and (max-width: 799px) {
    .group-card {
        width: calc(50% - 6px);
        min-width: 280px;
    }
    
    .groups-grid {
        justify-content: center;
    }
}

@media (max-width: 599px) {
    .chat-page {
        padding: 10px;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }
    
    .groups-grid {
        gap: 8px;
        justify-content: center;
    }
    
    .group-card {
        width: 100%;
        max-width: 400px;
        margin: 0;
    }
    
    .group-stats {
        flex-direction: column;
        gap: 10px;
    }
    
    .chat-room-header {
        padding: 10px 15px;
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .header-left,
    .header-right {
        width: 100%;
        display: flex;
        justify-content: center;
    }
    
    .group-title {
        order: -1;
    }
    
    .group-title h1 {
        font-size: 1.4rem;
    }
    
    .messages-area {
        padding: 15px;
        max-height: calc(100vh - 350px);
    }
    
    .messages-list {
        max-width: none;
    }
    
    .message-input-area {
        max-width: none;
        padding: 15px;
    }
    
    .message-item {
        max-width: 90%;
    }
    
    .message-item.message-current-user {
        max-width: 90%;
    }
    
    .input-container {
        gap: 10px;
    }
    
    .message-input {
        font-size: 16px;
        min-height: 45px;
        min-width: 0;
    }
    
    .send-button {
        width: 45px;
        height: 45px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .stat-card {
        padding: 15px;
    }
    
    .stat-content h3 {
        font-size: 1.4rem;
    }
    
    .group-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .group-id {
        margin-left: 0;
        align-self: flex-end;
    }
    
    .message-item {
        max-width: 95%;
    }
    
    .message-item.message-current-user {
        max-width: 95%;
    }
    
    .messages-area {
        max-height: calc(100vh - 400px);
    }
    
    .input-container {
        gap: 8px;
    }
} 

/* Modal overlay for create chat group dialog */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: 20px;
}

/* Header buttons container */
.header-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
}

.create-group-button {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.create-group-button:hover:not(:disabled) {
    background: linear-gradient(135deg, #45a049, #4CAF50);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.create-group-button:disabled {
    background: #cccccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Create Chat Group Form */
.create-chat-group-form {
    background: white;
    border-radius: 16px;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.create-chat-group-form .form-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 24px;
    border-radius: 16px 16px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.create-chat-group-form .form-title {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
}

.create-chat-group-form .form-close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.create-chat-group-form .form-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.create-chat-group-form .chat-group-form {
    padding: 24px;
}

.create-chat-group-form .form-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 24px;
}

.create-chat-group-form .form-left,
.create-chat-group-form .form-right {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.create-chat-group-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.create-chat-group-form .form-group label {
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

.create-chat-group-form .form-group input,
.create-chat-group-form .form-group textarea {
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background: white;
}

.create-chat-group-form .form-group input:focus,
.create-chat-group-form .form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.create-chat-group-form .form-group input:disabled,
.create-chat-group-form .form-group textarea:disabled {
    background: #f5f5f5;
    color: #666;
    cursor: not-allowed;
}

.create-chat-group-form .form-hint {
    font-size: 12px;
    color: #666;
    margin-top: 4px;
}

/* Pixel Art Editor */
.create-chat-group-form .pixel-art-editor {
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    padding: 16px;
    background: #fafafa;
}

.create-chat-group-form .pixel-art-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.create-chat-group-form .pixel-art-header label {
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

.create-chat-group-form .import-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: background 0.3s ease;
}

.create-chat-group-form .import-btn:hover:not(:disabled) {
    background: #5a67d8;
}

.create-chat-group-form .import-btn:disabled {
    background: #cccccc;
    cursor: not-allowed;
}

/* Pixel string info */
.create-chat-group-form .pixel-string-info {
    margin-top: 16px;
    padding: 12px;
    background: white;
    border-radius: 8px;
    border: 1px solid #e1e5e9;
}

.create-chat-group-form .string-display {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.create-chat-group-form .string-display .label {
    font-weight: 600;
    color: #333;
    font-size: 12px;
}

.create-chat-group-form .string-display .value {
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: #666;
    flex: 1;
}

.create-chat-group-form .copy-container {
    position: relative;
}

.create-chat-group-form .copy-button {
    background: none;
    border: 1px solid #ddd;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    color: #666;
    font-size: 12px;
    transition: all 0.3s ease;
}

.create-chat-group-form .copy-button:hover {
    background: #f5f5f5;
    border-color: #bbb;
}

.create-chat-group-form .copy-tooltip {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
}

.create-chat-group-form .copy-tooltip.show {
    opacity: 1;
    visibility: visible;
}

.create-chat-group-form .string-length {
    display: flex;
    gap: 8px;
}

.create-chat-group-form .string-length .label {
    font-weight: 600;
    color: #333;
    font-size: 12px;
}

.create-chat-group-form .string-length .value {
    font-size: 12px;
    color: #666;
}

/* Error message */
.create-chat-group-form .error-message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
    font-weight: 500;
}

.create-chat-group-form .error-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.create-chat-group-form .error-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Creating progress */
.create-chat-group-form .creating-progress {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: #e3f2fd;
    border: 1px solid #bbdefb;
    border-radius: 8px;
    margin-bottom: 16px;
    color: #1565c0;
    font-weight: 500;
}

.create-chat-group-form .creating-progress i {
    color: #1976d2;
}

/* Button group */
.create-chat-group-form .button-group {
    display: flex;
    justify-content: center;
    padding-top: 16px;
}

.create-chat-group-form .create-group-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 14px 32px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    min-width: 200px;
}

.create-chat-group-form .create-group-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, #5a67d8, #6b46c1);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.create-chat-group-form .create-group-btn:disabled {
    background: #cccccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Responsive design */
@media (max-width: 768px) {
    .modal-overlay {
        padding: 10px;
    }
    
    .create-chat-group-form {
        max-height: 95vh;
    }
    
    .create-chat-group-form .form-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .create-chat-group-form .form-header {
        padding: 16px 20px;
    }
    
    .create-chat-group-form .form-title {
        font-size: 20px;
    }
    
    .header-buttons {
        flex-direction: column;
        gap: 8px;
    }
    
    .create-group-button,
    .refresh-button {
        width: 100%;
        justify-content: center;
    }
} 

/* Pixel Art Controls Styles */
.pixel-art-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.size-selector {
    padding: 6px 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: white;
    font-size: 13px;
    color: #333;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 120px;
}

.size-selector:hover {
    border-color: #667eea;
}

.size-selector:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.size-selector:disabled {
    background: #f5f5f5;
    color: #999;
    cursor: not-allowed;
}

/* Memo Size Indicator Styles */
.memo-size-indicator {
    margin-top: 20px;
    padding: 16px;
    background: #f8f9ff;
    border: 1px solid #e1e5f2;
    border-radius: 8px;
}

.size-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.size-label {
    font-weight: 600;
    color: #4a5568;
    font-size: 14px;
}

.size-value {
    font-weight: 700;
    font-size: 14px;
    padding: 2px 8px;
    border-radius: 4px;
    background: #e2e8f0;
    color: #2d3748;
}

.size-value.valid {
    background: #c6f6d5;
    color: #22543d;
}

.size-value.invalid {
    background: #fed7d7;
    color: #c53030;
}

.size-range {
    font-size: 12px;
    color: #718096;
    margin-left: 4px;
}

.size-status {
    font-weight: 600;
    font-size: 13px;
    padding: 2px 6px;
    border-radius: 3px;
}

.size-status.valid {
    background: #c6f6d5;
    color: #22543d;
}

.size-status.invalid {
    background: #fed7d7;
    color: #c53030;
}

/* Progress Bar Styles */
.size-progress {
    margin-top: 8px;
}

.progress-bar {
    width: 100%;
    height: 20px;
    position: relative;
}

.progress-track {
    width: 100%;
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
}

.progress-fill.valid {
    background: linear-gradient(90deg, #48bb78 0%, #68d391 100%);
}

.progress-fill.invalid {
    background: linear-gradient(90deg, #f56565 0%, #fc8181 100%);
}

.progress-markers {
    position: absolute;
    top: -2px;
    left: 0;
    right: 0;
    height: 12px;
    pointer-events: none;
}

.marker {
    position: absolute;
    width: 2px;
    height: 12px;
    background: #4a5568;
    border-radius: 1px;
}

.marker.min-marker {
    background: #ed8936;
}

.marker.max-marker {
    background: #e53e3e;
}

.marker::after {
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    color: #4a5568;
    white-space: nowrap;
}

.marker.min-marker::after {
    content: "69";
    color: #ed8936;
}

.marker.max-marker::after {
    content: "800";
    color: #e53e3e;
}

/* Pixel Art Editor Enhancements */
.pixel-art-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}

.pixel-art-header label {
    font-weight: 600;
    color: #4a5568;
    font-size: 14px;
}

/* Import Button Styling */
.import-btn {
    padding: 6px 12px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.import-btn:hover {
    background: #5a67d8;
    transform: translateY(-1px);
}

.import-btn:disabled {
    background: #a0aec0;
    cursor: not-allowed;
    transform: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .pixel-art-controls {
        justify-content: center;
    }
    
    .size-info {
        justify-content: center;
        text-align: center;
    }
    
    .pixel-art-header {
        flex-direction: column;
        align-items: center;
    }
    
    .memo-size-indicator {
        padding: 12px;
    }
    
    .size-selector {
        min-width: 100px;
    }
} 

/* Icon spacing in create chat group form */
.create-chat-group-form label i {
    margin-right: 8px;
}

.create-chat-group-form .form-hint i {
    margin-right: 6px;
}

.create-chat-group-form .string-display .label i,
.create-chat-group-form .string-length .label i,
.create-chat-group-form .size-label i {
    margin-right: 6px;
}

.create-chat-group-form .import-btn i {
    margin-right: 6px;
}

.create-chat-group-form .create-group-btn i {
    margin-right: 8px;
}

.create-chat-group-form .form-title i {
    margin-right: 10px;
    color: #667eea;
}

.creating-progress i {
    margin-right: 8px;
}

/* Balance status colors */
.balance-sufficient {
    color: #38a169;
    font-weight: 600;
}

.balance-insufficient {
    color: #e53e3e;
    font-weight: 600;
} 

/* burn message special style */
.message-item.message-burn {
    border-left: 4px solid #ff6b35;
    background: linear-gradient(135deg, #fff5f3 0%, #ffffff 100%);
}

.message-item.message-burn .message-header {
    color: #d63384;
}

.message-type-indicator {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 8px;
}

.message-type-indicator.chat {
    background-color: #e3f2fd;
    color: #1976d2;
}

.message-type-indicator.burn {
    background-color: #fff3e0;
    color: #ff6b35;
}

.burn-amount {
    display: flex;
    align-items: center;
    gap: 4px;
    color: #ff6b35;
    font-weight: 600;
    font-size: 0.85rem;
}

.burn-amount i {
    color: #ff6b35;
}

/* burn message in current user's style */
.message-item.message-burn.message-current-user {
    background: linear-gradient(135deg, #fff8f0 0%, #fff5f3 100%);
    border-left: 4px solid #ff8a50;
} 

/* burn total in chat room title */
.title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.burned-amount {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #ff6b35, #ff8e53);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
}

.burned-amount i {
    color: #ffeb3b;
}

/* Action type selector */
.action-type-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: #f8f9fa;
    border-radius: 8px 8px 0 0;
    border-bottom: 1px solid #e0e0e0;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.radio-option input[type="radio"] {
    margin: 0;
    transform: scale(1.1);
}

.radio-option:hover {
    color: #6366f1;
}

.radio-option input[type="radio"]:checked + span {
    color: #6366f1;
    font-weight: 600;
}

/* burn amount input */
.burn-amount-input {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid #d0d0d0;
}

.burn-amount-input label {
    font-size: 0.9rem;
    color: #666;
    font-weight: 500;
}

.burn-amount-input input {
    width: 80px;
    padding: 0.3rem 0.5rem;
    border: 1px solid #d0d0d0;
    border-radius: 4px;
    font-size: 0.9rem;
    text-align: center;
}

.burn-amount-input span {
    font-size: 0.9rem;
    color: #666;
}

/* burn button style */
.send-button.burn-button {
    background: linear-gradient(135deg, #ff6b35, #ff8e53);
    border-color: #ff6b35;
}

.send-button.burn-button:hover:not(:disabled) {
    background: linear-gradient(135deg, #e55a2b, #e67d47);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}

.send-button.burn-button:disabled {
    background: #ffcab0;
    border-color: #ffcab0;
}

/* input container adjustment */
.message-input-area .input-container {
    border-radius: 0 0 8px 8px;
}

/* responsive design */
@media (max-width: 768px) {
    .title-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .action-type-selector {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .burn-amount-input {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        border-top: 1px solid #d0d0d0;
        padding-top: 0.5rem;
        margin-top: 0.5rem;
    }
} 

/* Action selector styles */
.action-selector {
    margin: 1rem 0;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.action-selector h4 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.action-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* reference mint-mode-option design */
.action-option {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    position: relative;
}

.action-option:hover {
    border-color: var(--accent-color);
    background: var(--hover-bg);
}

.action-option:has(input[type="radio"]:checked) {
    border-color: var(--accent-color);
    background: var(--accent-bg);
}

.action-option:has(input[type="radio"]:disabled) {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--bg-disabled);
    border-color: var(--border-disabled);
}

.action-option:has(input[type="radio"]:disabled):hover {
    border-color: var(--border-disabled);
    background: var(--bg-disabled);
}

/* Radio button line layout */
.action-radio-line {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    margin-bottom: 0.5rem;
}

.action-option input[type="radio"] {
    margin: 0;
    transform: scale(1.2);
    flex-shrink: 0;
    cursor: pointer;
}

.action-option input[type="radio"]:checked {
    accent-color: var(--accent-color);
}

.action-option input[type="radio"]:disabled {
    cursor: not-allowed;
}

/* Action label with icon */
.action-label {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    flex: 1;
}

.action-label i {
    font-size: 1.1rem;
    width: 16px;
    text-align: center;
}

/* Action description */
.action-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-left: 1.5rem;
    margin-bottom: 0.5rem;
}

/* Disabled state text color */
.action-option:has(input[type="radio"]:disabled) .action-label,
.action-option:has(input[type="radio"]:disabled) .action-description {
    color: var(--text-disabled);
}

/* Burn amount input container */
.burn-amount-container {
    margin-left: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.action-option input.burn-amount-input {
    width: 80px;
    padding: 0.4rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.9rem;
    text-align: center;
    transform: none; /* reset radio transform */
}

.action-option input.burn-amount-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(var(--accent-color-rgb), 0.2);
}

.action-option input.burn-amount-input:disabled {
    background: var(--bg-disabled);
    color: var(--text-disabled);
    cursor: not-allowed;
    opacity: 0.6;
}

.burn-unit {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Responsive design */
@media (max-width: 768px) {
    .action-options {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .action-option {
        padding: 0.75rem;
    }
}

/* CSS variable definition (if not already defined) */
:root {
    --accent-color: #007bff;
    --accent-color-rgb: 0, 123, 255;
    --accent-bg: rgba(0, 123, 255, 0.1);
    --hover-bg: rgba(0, 0, 0, 0.05);
    --bg-disabled: #f8f9fa;
    --border-disabled: #dee2e6;
    --text-disabled: #6c757d;
}

/* Burn total in header */
.burn-total {
    margin-left: 15px;
    padding: 4px 12px;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.burn-total i {
    margin-right: 4px;
}

/* Input container improvements */
.input-container {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

.input-container textarea {
    flex: 1;
}

.input-container .send-button {
    flex-shrink: 0;
    height: fit-content;
    padding: 12px 16px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
}

/* Message input area layout */
.message-input-area {
    padding: 16px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

/* Responsive improvements */
@media (max-width: 768px) {
    .action-selector {
        flex-direction: column;
        gap: 10px;
    }
    
    .radio-option {
        flex-wrap: wrap;
    }
    
    .burn-amount-input {
        width: 100px;
        margin-left: 0;
        margin-top: 4px;
    }
} 

/* Burn mode specific styling - burn mode specific styling */
.action-option:has(input[value="burn"]:checked) {
    border-color: #dc3545; /* red border */
    background: #fff5f5; /* light red background */
}

.action-option:has(input[value="burn"]:checked):hover {
    background: #fee; /* hover light red */
    border-color: #c82333; /* hover deep red border */
}

/* also adjust accent color for burn button to red */
.action-option:has(input[value="burn"]) input[type="radio"]:checked {
    accent-color: #dc3545;
}

/* also adjust hover state for burn option for better visual effect */
.action-option:has(input[value="burn"]):hover {
    border-color: #dc3545;
    background: #fff8f8;
}

/* ensure burn mode label has appropriate color when selected */
.action-option:has(input[value="burn"]:checked) .action-label {
    color: #721c24; /* deep red text */
}

.action-option:has(input[value="burn"]:checked) .action-label i {
    color: #dc3545; /* red fire icon */
} 

/* ===== burn leaderboard related styles ===== */

/* leaderboard overview stats */
.leaderboard-overview {
    margin-top: 30px;
}

.leaderboard-overview .overview-stats {
    margin-bottom: 40px;
}

.leaderboard-overview .overview-stats h2 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* paginated leaderboard */
.paginated-leaderboard {
    margin-top: 30px;
}

.paginated-leaderboard h2 {
    font-size: 1.6rem;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* pagination info */
.pagination-info {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 6px;
    padding: 12px 16px;
    margin-bottom: 20px;
    text-align: center;
}

.pagination-info p {
    margin: 0;
    color: #6c757d;
    font-size: 0.95rem;
    font-weight: 500;
}

/* leaderboard grid */
.leaderboard-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 16px;
    padding: 0;
    width: 100%;
    margin-bottom: 30px;
}

/* leaderboard card */
.leaderboard-card {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    width: 300px;
    flex-grow: 0;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.leaderboard-card.clickable {
    cursor: pointer;
}

.leaderboard-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

/* top 3 cards special background color */
.leaderboard-card.rank-1 {
    background: linear-gradient(135deg, #ffebee, #fce4ec);
    border-color: #f8bbd9;
}

.leaderboard-card.rank-2 {
    background: linear-gradient(135deg, #fff3e0, #ffe0b2);
    border-color: #ffcc80;
}

.leaderboard-card.rank-3 {
    background: linear-gradient(135deg, #fffde7, #fff9c4);
    border-color: #fff176;
}

/* leaderboard card content */
.leaderboard-card .group-header {
    margin-top: 15px; /* reset margin, no space for rank identifier */
    margin-bottom: 15px;
}

.leaderboard-card .group-image {
    margin-bottom: 15px;
    text-align: center;
}

.leaderboard-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.burn-stat {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem; /* same as message-stat font size */
    font-weight: normal; /* remove bold */
    color: #666; /* same as message-stat normal font color */
}

.burn-stat i {
    color: #dc3545; /* only icon remains red */
    font-size: 1.1rem;
}

.message-stat {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: #666;
}

.message-stat i {
    color: #007bff;
}

/* group info not available */
.group-not-found {
    text-align: center;
    padding: 20px 0;
}

.group-not-found h3 {
    color: #6c757d;
    margin-bottom: 15px;
}

.group-not-found p {
    color: #adb5bd;
    font-style: italic;
    margin-top: 10px;
}

/* loading placeholder */
.loading-placeholder {
    text-align: center;
    padding: 40px 20px;
}

.loading-spinner-small {
    width: 24px;
    height: 24px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

.loading-placeholder p {
    color: #6c757d;
    font-size: 0.9rem;
    margin: 0;
}

/* ===== pagination controls ===== */

.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 30px;
    padding: 20px 0;
}

.pagination-btn {
    background: #007bff;
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s, opacity 0.2s;
    font-weight: 500;
}

.pagination-btn:hover:not(:disabled) {
    background: #0056b3;
}

.pagination-btn:disabled {
    background: #6c757d;
    cursor: not-allowed;
    opacity: 0.6;
}

.page-numbers {
    display: flex;
    align-items: center;
    gap: 5px;
    margin: 0 10px;
}

.page-number {
    background: white;
    color: #007bff;
    border: 1px solid #dee2e6;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
    min-width: 40px;
    text-align: center;
    font-weight: 500;
}

.page-number:hover {
    background: #e9ecef;
    border-color: #007bff;
}

.page-number.active {
    background: #007bff;
    color: white;
    border-color: #007bff;
    font-weight: bold;
}

.pagination-ellipsis {
    color: #6c757d;
    padding: 8px 4px;
    font-weight: bold;
    user-select: none;
}

/* ===== header button styles ===== */

.header-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.create-group-button {
    background: #28a745;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s;
}

.create-group-button:hover:not(:disabled) {
    background: #218838;
}

.create-group-button:disabled {
    background: #6c757d;
    cursor: not-allowed;
}

/* ===== empty state styles ===== */

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #6c757d;
}

.empty-state i {
    font-size: 4rem;
    color: #dee2e6;
    margin-bottom: 20px;
}

.empty-state p {
    font-size: 1.1rem;
    margin: 0;
}

/* ===== responsive design ===== */

@media (max-width: 768px) {
    .leaderboard-grid {
        justify-content: center;
    }
    
    .leaderboard-card {
        width: 100%;
        max-width: 400px;
    }
    
    .pagination-controls {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .page-numbers {
        margin: 10px 0;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .header-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .create-group-button,
    .refresh-button {
        width: 200px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .leaderboard-card {
        padding: 16px;
    }
    
    .pagination-btn {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .page-number {
        padding: 6px 10px;
        min-width: 35px;
        font-size: 13px;
    }
} 

/* Display mode selector */
.display-mode-selector {
    margin: 20px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.display-mode-selector label {
    font-weight: 600;
    color: #333;
    display: flex;
    align-items: center;
    gap: 5px;
}

.display-mode-selector select {
    padding: 8px 12px;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    background: white;
    font-size: 14px;
    color: #333;
    min-width: 150px;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.display-mode-selector select:hover {
    border-color: #007bff;
}

.display-mode-selector select:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.page-info {
    padding: 8px 16px;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    font-weight: 500;
    color: #495057;
}

/* Responsive design for mode selector */
@media (max-width: 768px) {
    .display-mode-selector {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .display-mode-selector select {
        width: 100%;
        min-width: unset;
    }
}