/* File: assets/styles.css - CSS cho trang web AI phân tích thị trường vàng */

/* Reset CSS cơ bản */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: #1e3a8a;
    color: #fff;
    padding: 20px 0;
    border-bottom: 5px solid #ffc107;
}

header h1 {
    margin-bottom: 15px;
    font-size: 28px;
    text-align: center;
}

nav ul {
    display: flex;
    list-style: none;
    justify-content: center;
    flex-wrap: wrap;
}

nav ul li {
    margin: 0 15px 10px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background-color 0.3s;
    display: inline-block;
}

nav ul li a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

nav ul li a.active {
    background-color: rgba(255, 255, 255, 0.25);
    font-weight: bold;
}

/* Main content */
main {
    padding: 30px 0;
}

section {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 25px;
    margin-bottom: 30px;
}

section h2 {
    color: #1e3a8a;
    margin-bottom: 20px;
    font-size: 22px;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 10px;
}

/* Trang chủ */
.welcome p {
    margin-bottom: 15px;
    font-size: 16px;
    line-height: 1.7;
}

.gold-price {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    font-size: 28px;
    font-weight: bold;
    justify-content: center;
}

#current-price {
    margin-right: 15px;
}

#price-change {
    font-size: 18px;
    padding: 5px 10px;
    border-radius: 4px;
}

#price-change.positive {
    background-color: #e6f7e6;
    color: #28a745;
}

#price-change.negative {
    background-color: #fdeded;
    color: #dc3545;
}

.chart-container {
    height: 300px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 10px;
    background-color: #fafafa;
    margin-top: 20px;
}

.action-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 20px;
}

.btn {
    display: inline-block;
    background-color: #1e3a8a;
    color: #fff;
    padding: 12px 24px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background-color 0.3s;
    font-size: 16px;
    text-align: center;
}

.btn:hover {
    background-color: #152c69;
}

/* Trang trò chuyện */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 500px;
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid #e0e0e0;
}

.message {
    margin-bottom: 15px;
    max-width: 80%;
    padding: 12px 15px;
    border-radius: 8px;
    line-height: 1.5;
}

.user-message {
    background-color: #e3f2fd;
    margin-left: auto;
    border-bottom-right-radius: 2px;
    color: #0d47a1;
}

.ai-message {
    background-color: #f5f5f5;
    margin-right: auto;
    border-bottom-left-radius: 2px;
    color: #333;
}

.message-content {
    word-wrap: break-word;
}

.chat-input {
    margin-top: 10px;
    position: relative;
}

#chat-form {
    display: flex;
    flex-direction: column;
}

#user-input {
    width: 100%;
    height: 100px;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    resize: none;
    font-family: inherit;
    font-size: 15px;
}

.input-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
    gap: 10px;
}

.btn-file {
    display: inline-block;
    background-color: #6c757d;
    color: #fff;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s;
}

.btn-file:hover {
    background-color: #5a6268;
}

.btn-file input[type="file"] {
    display: none;
}

#send-btn {
    background-color: #1e3a8a;
    color: #fff;
    padding: 10px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s;
}

#send-btn:hover {
    background-color: #152c69;
}

.training-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
    margin-top: 10px;
}

.training-option {
    margin-right: 20px;
    display: flex;
    align-items: center;
}

.training-option input[type="checkbox"] {
    margin-right: 8px;
    width: 16px;
    height: 16px;
}

/* Trang phân tích */
.price-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.price-card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s;
}

.price-card:hover {
    transform: translateY(-5px);
}

.price-card h3 {
    font-size: 16px;
    margin-bottom: 15px;
    color: #6c757d;
}

.price {
    font-size: 28px;
    font-weight: bold;
    color: #1e3a8a;
    margin-bottom: 10px;
}

.change {
    font-size: 15px;
    padding: 4px 10px;
    border-radius: 4px;
    display: inline-block;
}

.change.positive {
    background-color: #e6f7e6;
    color: #28a745;
}

.change.negative {
    background-color: #fdeded;
    color: #dc3545;
}

.chart-controls {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

#timeframe-selector {
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid #ccc;
    font-size: 14px;
    background-color: #fff;
}

.indicator-toggles {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.indicator-toggles label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.analysis-tabs {
    display: flex;
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 20px;
    overflow-x: auto;
}

.tab-btn {
    padding: 12px 20px;
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 500;
    color: #6c757d;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
    white-space: nowrap;
}

.tab-btn:hover {
    color: #495057;
}

.tab-btn.active {
    color: #1e3a8a;
    border-bottom-color: #1e3a8a;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.analysis-card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.analysis-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #495057;
    border-bottom: 1px solid #e9ecef;
    padding-bottom: 8px;
}

.analysis-card p {
    margin-bottom: 10px;
    line-height: 1.5;
}

.analysis-card strong {
    font-weight: 600;
    color: #212529;
}

/* Footer */
footer {
    background-color: #1e3a8a;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    margin-top: 30px;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 24px;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav ul li {
        margin-bottom: 10px;
        width: 100%;
        text-align: center;
    }
    
    .price-cards {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .chart-controls {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .gold-price {
        flex-direction: column;
        align-items: center;
    }
    
    #current-price {
        margin-right: 0;
        margin-bottom: 10px;
    }
    
    .btn {
        width: 100%;
    }
}

/* Thêm hiệu ứng loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: #1e3a8a;
    animation: spin 1s ease-in-out infinite;
    margin-right: 10px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Hiệu ứng đang nhập tin nhắn */
.typing {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.typing-dots {
    display: flex;
    padding: 10px 15px;
    background-color: #f0f0f0;
    border-radius: 18px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    margin: 0 2px;
    background-color: #888;
    border-radius: 50%;
    animation: typing-dot 1.4s ease-in-out infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing-dot {
    0%, 60%, 100% { transform: scale(1); opacity: 0.6; }
    30% { transform: scale(1.5); opacity: 1; }
}

/* Bổ sung CSS cho trạng thái API - Thêm vào cuối file styles.css */

/* Phần trạng thái API */
.api-status {
    background-color: #f8f9fa;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 30px;
}

.api-status h2 {
    color: #1e3a8a;
    margin-bottom: 15px;
    font-size: 20px;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 10px;
}

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

.api-status-item {
    background-color: #fff;
    border-radius: 6px;
    padding: 15px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.api-status-item h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: #495057;
}

.api-status-ok {
    color: #28a745;
    font-weight: 500;
}

.api-status-error {
    color: #dc3545;
    font-weight: 500;
}

.status-ok {
    background-color: #e6f7e6;
    color: #28a745;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 14px;
}

.status-error {
    background-color: #fdeded;
    color: #dc3545;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 14px;
}

/* Hiệu ứng loading */
.loading-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    color: #6c757d;
}

.loading-indicator::before {
    content: "";
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: #1e3a8a;
    animation: spin 1s ease-in-out infinite;
    margin-right: 10px;
}

/* Thông báo lỗi */
.error-message {
    background-color: #fdeded;
    color: #dc3545;
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
    text-align: center;
}

/* Chart message */
.chart-message {
    padding: 20px;
    text-align: center;
    color: #6c757d;
}

/* Responsive cho phần API status */
@media (max-width: 768px) {
    .api-status-grid {
        grid-template-columns: 1fr;
    }
}

/* Thêm animation cho các thành phần */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.price-card, .analysis-card {
    animation: fadeIn 0.5s ease-out;
}

.tab-pane.active {
    animation: fadeIn 0.3s ease-out;
}
/* File: Bổ sung cho assets/styles.css - CSS hiển thị đơn vị giá */

/* Hiển thị đơn vị giá */
.price-unit {
    font-size: 0.7em;
    color: #6c757d;
    margin-left: 2px;
}

/* Thông báo cập nhật giá */
.price-update-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    max-width: 300px;
    background-color: #fff;
    border-left: 4px solid #ffc107;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.notification-content {
    padding: 15px;
    padding-right: 30px;
    position: relative;
}

.close-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #999;
}

.close-btn:hover {
    color: #333;
}

/* Cải thiện hiển thị giá trên trang chủ */
#current-price {
    font-size: 28px;
    font-weight: bold;
    color: #1e3a8a;
}

.gold-price {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

/* Thêm highlight cho giá hiện tại */
.highlight-price {
    animation: pulsate 2s infinite alternate;
}

@keyframes pulsate {
    from { box-shadow: 0 0 0 0 rgba(255, 193, 7, 0.4); }
    to { box-shadow: 0 0 0 15px rgba(255, 193, 7, 0); }
}

/* Cải thiện hiển thị biểu đồ */
.chart-container {
    height: 300px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
    background-color: #fafafa;
    margin-top: 20px;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.05);
}

/* Style cho chú thích đơn vị */
.unit-legend {
    text-align: right;
    font-size: 12px;
    color: #6c757d;
    margin-top: 5px;
}

/* Đánh dấu giá đã được cập nhật */
.updated-price {
    position: relative;
}

.updated-price::after {
    content: "✓";
    color: #28a745;
    font-size: 12px;
    position: absolute;
    top: -5px;
    right: -12px;
}

/* Bổ sung CSS cho trang chat.php - Thêm phần này vào cuối file styles.css */

/* Tab điều hướng */
.chat-tabs {
    display: flex;
    margin-bottom: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.chat-tab-btn {
    padding: 12px 24px;
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 500;
    color: #6c757d;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
    position: relative;
}

.chat-tab-btn:hover {
    color: #495057;
}

.chat-tab-btn.active {
    color: #1e3a8a;
    border-bottom-color: #1e3a8a;
}

.chat-tab-content {
    display: none;
}

.chat-tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* Phần đào tạo AI */
.training-option {
    display: flex;
    align-items: center;
    margin-right: 20px;
}

.tooltip {
    display: inline-block;
    background-color: #f8f9fa;
    color: #6c757d;
    width: 18px;
    height: 18px;
    line-height: 18px;
    text-align: center;
    border-radius: 50%;
    margin-left: 5px;
    font-size: 12px;
    cursor: help;
    position: relative;
}

.tooltip:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px;
    background-color: #333;
    color: #fff;
    border-radius: 4px;
    white-space: nowrap;
    font-size: 12px;
    z-index: 10;
}

/* Lịch sử đào tạo */
.history-filters {
    margin-bottom: 20px;
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
}

.filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

#search-history {
    flex: 1;
    min-width: 200px;
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

#filter-category {
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

.training-history-list {
    max-height: 500px;
    overflow-y: auto;
    padding: 10px;
    background-color: #fff;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    margin-bottom: 20px;
}

.training-history-item {
    margin-bottom: 15px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s;
}

.history-item-header {
    padding: 12px 15px;
    background-color: #f8f9fa;
    display: flex;
    align-items: center;
    cursor: pointer;
    position: relative;
}

.history-item-title {
    font-weight: 500;
    flex: 1;
}

.history-item-date {
    color: #6c757d;
    font-size: 14px;
}

.history-item-content {
    padding: 15px;
    display: none;
    background-color: #fff;
    border-top: 1px solid #e0e0e0;
}

.training-history-item.expanded .history-item-content {
    display: block;
}

.history-item-question {
    margin-bottom: 10px;
    font-style: italic;
    color: #495057;
}

.history-item-answer {
    color: #212529;
}

.history-item-category {
    padding: 10px 15px;
    display: flex;
    justify-content: flex-end;
    background-color: #f8f9fa;
    border-top: 1px solid #e0e0e0;
}

.category-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    color: #fff;
    font-size: 12px;
}

.checkbox-container {
    display: inline-block;
    position: relative;
    padding-left: 30px;
    margin-right: 15px;
    cursor: pointer;
    user-select: none;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: #eee;
    border-radius: 4px;
}

.checkbox-container:hover input ~ .checkmark {
    background-color: #ccc;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: #1e3a8a;
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 8px;
    top: 4px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.history-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

.no-data {
    padding: 20px;
    text-align: center;
    color: #6c757d;
}

/* Thông báo thông tin học tập mới */
.new-training-notification {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: #f44336;
    color: white;
    border-radius: 10px;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: normal;
}

/* Responsive */
@media (max-width: 768px) {
    .filter-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .history-item-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .history-item-date {
        margin-top: 5px;
    }
    
    .history-actions {
        flex-direction: column;
    }
}
/* Cập nhật CSS cho hộp chat - Thêm phần này vào cuối file styles.css */

/* Tăng kích thước hộp chat */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 650px; /* Tăng chiều cao mặc định */
    position: relative; /* Thêm position để hỗ trợ resize */
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid #e0e0e0;
    min-height: 300px; /* Chiều cao tối thiểu */
}

/* Thêm nút tùy chỉnh kích thước */
.chat-resize-controls {
    position: absolute;
    right: 10px;
    top: -35px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.chat-resize-controls button {
    background-color: #f0f0f0;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 5px 10px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.chat-resize-controls button:hover {
    background-color: #e0e0e0;
}

/* Thêm thanh resize cho người dùng có thể kéo */
.chat-resizer {
    width: 100%;
    height: 5px;
    background-color: #e0e0e0;
    cursor: ns-resize;
    margin-bottom: 5px;
    border-radius: 3px;
    transition: background-color 0.3s;
}

.chat-resizer:hover {
    background-color: #1e3a8a;
}

.chat-resizer.active {
    background-color: #1e3a8a;
}

/* Thêm tùy chọn giao diện chat */
.chat-options {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 10px;
    gap: 10px;
}

.font-size-control {
    display: flex;
    align-items: center;
    gap: 5px;
}

.font-size-control button {
    background-color: #f0f0f0;
    border: 1px solid #ddd;
    width: 25px;
    height: 25px;
    line-height: 25px;
    text-align: center;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
}

.theme-toggle {
    padding: 5px 10px;
    border-radius: 4px;
    background-color: #f0f0f0;
    border: 1px solid #ddd;
    cursor: pointer;
}

/* CSS cho chế độ tối */
.dark-theme .chat-history {
    background-color: #2c3e50;
    color: #ecf0f1;
    border-color: #34495e;
}

.dark-theme .message.user-message {
    background-color: #3498db;
    color: #fff;
}

.dark-theme .message.ai-message {
    background-color: #34495e;
    color: #ecf0f1;
}

.dark-theme #user-input {
    background-color: #2c3e50;
    color: #ecf0f1;
    border-color: #34495e;
}

.dark-theme .training-options {
    background-color: #2c3e50;
    color: #ecf0f1;
}

.dark-theme .btn {
    background-color: #3498db;
}

.dark-theme .chat-tabs {
    border-bottom-color: #34495e;
}

.dark-theme .chat-tab-btn {
    color: #ecf0f1;
}

.dark-theme .chat-tab-btn.active {
    color: #3498db;
    border-bottom-color: #3498db;
}

/* Thêm style cho chế độ CSS màn hình đầy đủ */
.chat-fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    background-color: #fff;
    padding: 20px;
    border-radius: 0;
    box-shadow: none;
}

.dark-theme .chat-fullscreen {
    background-color: #1a2533;
}

.chat-fullscreen .chat-history {
    height: calc(100vh - 250px);
}

.chat-fullscreen .chat-fullscreen-toggle {
    background-color: #f44336;
    color: white;
}

.fullscreen-exit {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: #f44336;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
    display: none;
}

.chat-fullscreen .fullscreen-exit {
    display: block;
}

/* Các kích thước font cho tin nhắn */
.font-size-small .message-content {
    font-size: 14px;
}

.font-size-normal .message-content {
    font-size: 16px;
}

.font-size-large .message-content {
    font-size: 18px;
}

.font-size-xlarge .message-content {
    font-size: 20px;
}

/* Lưu trữ tùy chọn người dùng */
.user-settings-toggle {
    background-color: #f0f0f0;
    border: 1px solid #ddd;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
}

.user-settings-toggle:hover {
    background-color: #e0e0e0;
}

/* Responsive */
@media (max-width: 768px) {
    .chat-resize-controls {
        position: static;
        margin-bottom: 10px;
    }
    
    .chat-options {
        flex-wrap: wrap;
    }
    
    .chat-container {
        height: 500px;
    }
}