body {
    background: #f0f2f5;
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.chat-container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    background: #fff;
    border-radius: 16px 16px 0 0;
    box-shadow: 0 2px 16px rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow: hidden;
}

.chat-header {
    background: linear-gradient(90deg, #0078d7 60%, #00b4d8 100%);
    color: #fff;
    padding: 20px 16px 16px 16px;
    font-size: 1.4em;
    font-weight: bold;
    text-align: left;
    border-radius: 16px 16px 0 0;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-label {
    background: #ffe066;
    color: #333;
    font-size: 0.9em;
    border-radius: 6px;
    padding: 2px 8px;
    margin-left: 8px;
}

.chat-users {
    background: #e9f1fb;
    color: #0078d7;
    padding: 10px 16px;
    font-size: 1em;
    border-bottom: 1px solid #d0e2f7;
    min-height: 32px;
    overflow-x: auto;
    white-space: nowrap;
}

.chat-messages {
    flex: 1;
    padding: 16px 8px 8px 8px;
    overflow-y: auto;
    background: #f9f9f9;
    font-size: 1.08em;
    word-break: break-word;
}

.chat-message {
    margin-bottom: 10px;
    padding: 8px 12px;
    background: #e3f2fd;
    border-radius: 10px;
    display: inline-block;
    max-width: 90%;
}

#chat-form {
    display: flex;
    gap: 8px;
    border-top: 1px solid #eee;
    padding: 12px 8px;
    background: #fafafa;
    position: sticky;
    bottom: 0;
}
#chat-form input[type="text"] {
    flex: 1 1 0%;
    min-width: 0;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1em;
    background: #f4f6fb;
    outline: none;
    transition: border 0.2s;
}
#chat-form input[type="text"]:focus {
    border: 1.5px solid #0078d7;
}
#chat-form button {
    flex: 0 0 auto;
    padding: 12px 20px;
    background: linear-gradient(90deg, #0078d7 60%, #00b4d8 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
    box-shadow: 0 2px 8px rgba(0,120,215,0.08);
    min-width: 80px;
}
#chat-form button:hover {
    background: linear-gradient(90deg, #005fa3 60%, #0096c7 100%);
}

.admin-panel {
    background: #f8f9fa;
    border-top: 1px solid #e0e0e0;
    padding: 20px 8px 12px 8px;
    font-size: 1em;
    border-radius: 0 0 16px 16px;
    margin-top: 8px;
    box-shadow: 0 2px 8px rgba(0,120,215,0.04);
}
.admin-panel h3 {
    color: #0078d7;
    margin: 0 0 10px 0;
    font-size: 1.2em;
    letter-spacing: 1px;
}
.admin-panel hr {
    border: none;
    border-top: 1px solid #d0e2f7;
    margin: 12px 0;
}
#user-admin {
    margin-top: 10px;
}
#user-admin h4 {
    color: #00b4d8;
    margin-bottom: 8px;
    font-size: 1.08em;
}
#user-admin form {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
    align-items: center;
    background: #f4f6fb;
    padding: 8px;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0,120,215,0.03);
}
#user-admin input, #user-admin select {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1em;
    min-width: 120px;
    background: #fff;
}
#user-admin button {
    background: #0078d7;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    font-size: 1em;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}
#user-admin button:hover {
    background: #005fa3;
}
#user-admin-status {
    color: #d9534f;
    font-size: 0.98em;
    margin-bottom: 6px;
}
#user-list {
    margin-top: 8px;
    color: #0078d7;
    font-size: 0.98em;
    background: #e9f1fb;
    padding: 6px 10px;
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0,120,215,0.03);
}
/* Add help/info */
.admin-panel .admin-help {
    color: #0078d7;
    font-size: 0.97em;
    margin-top: 10px;
    background: #e9f1fb;
    padding: 8px 10px;
    border-radius: 8px;
}

@media (max-width: 600px) {
    .chat-container {
        max-width: 100vw;
        border-radius: 0;
        min-height: 100vh;
    }
    .chat-header {
        font-size: 1.1em;
        padding: 16px 8px 12px 8px;
    }
    .chat-users, .chat-messages, .admin-panel {
        padding-left: 4px;
        padding-right: 4px;
    }
    #chat-form {
        flex-direction: column;
        gap: 0;
        padding: 8px 4px;
    }
    #chat-form input[type="text"] {
        width: 100%;
        margin-bottom: 8px;
        min-width: 0;
    }
    #chat-form button {
        width: 100%;
        margin: 0;
        min-width: 0;
    }
}