:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --primary-color: #4a76a8;
    --secondary-color: #f5f5f5;
    --border-color: #dddddd;
    --hover-color: #3a6698;
    --success-color: #dff0d8;
    --error-color: #f2dede;
}

.dark-theme {
    --bg-color: #1e1e1e;
    --text-color: #f5f5f5;
    --primary-color: #5e88b0;
    --secondary-color: #2d2d2d;
    --border-color: #444444;
    --hover-color: #4a76a8;
    --success-color: #2d4d2d;
    --error-color: #4d2d2d;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--secondary-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1000px;
    margin: 20px auto;
    padding: 20px;
    background-color: var(--bg-color);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    transition: background-color 0.3s;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background-color: var(--secondary-color);
}

.auth-section, .main-section {
    margin-bottom: 30px;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--bg-color);
}

input, select, button {
    padding: 10px 15px;
    margin: 8px 0;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s;
}

button {
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    border: none;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--hover-color);
}

button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

#conversations-list {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.conversation {
    padding: 12px;
    margin: 6px 0;
    background-color: var(--secondary-color);
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
}

.conversation:hover {
    background-color: var(--hover-color);
    color: white;
}

.conversation.selected {
    background-color: var(--primary-color);
    color: white;
}

.conversation-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px;
    object-fit: cover;
}

.conversation-info {
    flex: 1;
}

.conversation-name {
    font-weight: bold;
}

.conversation-last-message {
    font-size: 0.8rem;
    color: inherit;
    opacity: 0.8;
}

.hidden {
    display: none;
}

#status, #auth-status {
    margin-top: 10px;
    padding: 10px;
    border-radius: 4px;
}

.success {
    background-color: var(--success-color);
    color: #3c763d;
}

.error {
    background-color: var(--error-color);
    color: #a94442;
}

.token-help {
    margin: 10px 0;
    font-size: 0.9rem;
}

#get-token-link {
    color: var(--primary-color);
    text-decoration: none;
}

#get-token-link:hover {
    text-decoration: underline;
}

.file-upload {
    margin: 15px 0;
}

.file-label {
    padding: 12px 20px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.file-label:hover {
    background-color: var(--hover-color);
}

#video-file {
    display: none;
}

.status-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 10px 0;
    padding: 8px 12px;
    background-color: var(--secondary-color);
    border-radius: 4px;
}

.status-info i {
    color: var(--primary-color);
}

#load-more {
    width: 100%;
    margin-top: 10px;
}

.loader {
    border: 4px solid var(--secondary-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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