body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

.login-container {
    max-width: 400px;
    margin: 100px auto;
}

.chat-container {
    height: calc(100vh - 120px);
    display: flex;
    flex-direction: column;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.message {
    margin-bottom: 15px;
    padding: 10px 15px;
    border-radius: 10px;
    max-width: 80%;
    word-break: break-word;
}

.user-message {
    background-color: #007bff;
    color: white;
    align-self: flex-end;
    margin-left: auto;
}

.bot-message {
    background-color: #e9ecef;
    color: #212529;
    align-self: flex-start;
}

.chat-input {
    padding: 15px;
    background-color: #fff;
    border-top: 1px solid #dee2e6;
}

.admin-sidebar {
    background-color: #343a40;
    color: #fff;
    min-height: 100vh;
}

.admin-sidebar .nav-link {
    color: rgba(255, 255, 255, 0.75);
}

.admin-sidebar .nav-link:hover {
    color: #fff;
}

.admin-sidebar .nav-link.active {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.1);
}

.admin-content {
    padding: 20px;
}

.table-hover tbody tr:hover {
    background-color: rgba(0, 123, 255, 0.1);
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 123, 255, 0.3);
    border-radius: 50%;
    border-top-color: #007bff;
    animation: spin 1s ease-in-out infinite;
}

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

.message-time {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 5px;
    text-align: right;
}

.bot-message .message-time {
    color: rgba(0, 0, 0, 0.5);
}

.typing-indicator {
    display: flex;
    align-items: center;
    margin: 10px 0;
}

.typing-indicator span {
    height: 10px;
    width: 10px;
    margin: 0 2px;
    background-color: #bbb;
    border-radius: 50%;
    display: inline-block;
    animation: bouncing 1s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) {
    animation-delay: 0s;
}
.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}
.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes bouncing {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}