body {
    background-color: #f4f6f9;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background: white;
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.stat-card {
    border: none;
    border-radius: 12px;
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-3px);
}

.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    margin-bottom: 20px;
}

.card-header {
    background: white;
    border-bottom: 1px solid #eee;
    border-radius: 12px 12px 0 0 !important;
    padding: 15px 20px;
}

.channel-status-card {
    text-align: center;
    padding: 25px 15px;
    border-radius: 12px;
    border: 2px solid #eee;
    transition: all 0.3s;
}

.channel-status-card.connected {
    border-color: #28a745;
    background: #f8fff9;
}

.channel-status-card.disconnected {
    border-color: #dee2e6;
    background: #f8f9fa;
}

.channel-status-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.chat-messages-container {
    max-height: 600px;
    overflow-y: auto;
    padding: 15px;
}

.chat-test-container {
    height: 450px;
    overflow-y: auto;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.chat-message {
    margin-bottom: 15px;
    padding: 12px 16px;
    border-radius: 12px;
    max-width: 80%;
}

.user-message {
    background: #e3f2fd;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.bot-message {
    background: white;
    border: 1px solid #eee;
    border-bottom-left-radius: 4px;
}

.message-header {
    font-size: 0.85rem;
    margin-bottom: 5px;
}

.message-content {
    font-size: 0.95rem;
    line-height: 1.5;
}

.setup-steps {
    padding-left: 20px;
}

.setup-steps li {
    margin-bottom: 10px;
    line-height: 1.5;
}

.navbar-dark .navbar-nav .nav-link {
    transition: color 0.2s;
}

.navbar-dark .navbar-nav .nav-link:hover {
    color: #fff;
}

.table th {
    font-weight: 600;
    color: #495057;
    border-top: none;
}

.btn {
    border-radius: 8px;
}

.badge {
    border-radius: 6px;
}

.form-control, .form-select {
    border-radius: 8px;
}

.modal-content {
    border-radius: 12px;
    border: none;
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 8px;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: #aaa;
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

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

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-8px); }
}

@media (max-width: 768px) {
    .chat-message {
        max-width: 95%;
    }
    .stat-card h2 {
        font-size: 1.5rem;
    }
}