* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary: #4361ee;
    --secondary: #3a0ca3;
    --accent: #4cc9f0;
    --light: #f8f9fa;
    --dark: #212529;
    --success: #4ade80;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray: #6c757d;
    --light-gray: #e9ecef;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 1000px;
    background-color: white;
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 90vh;
}

header {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 24px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
}

.status {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(255, 255, 255, 0.2);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 14px;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.chat-container {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.sidebar {
    width: 250px;
    background-color: var(--light);
    border-right: 1px solid var(--light-gray);
    padding: 20px;
    overflow-y: auto;
}

.sidebar h3 {
    color: var(--dark);
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: 600;
}

.faq-categories {
    list-style: none;
}

.faq-categories li {
    padding: 10px 15px;
    margin-bottom: 8px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.faq-categories li:hover {
    background-color: var(--light-gray);
}

.faq-categories li.active {
    background-color: var(--primary);
    color: white;
}

.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px;
    overflow-y: auto;
}

.welcome-message {
    text-align: center;
    padding: 20px;
    background-color: var(--light);
    border-radius: 15px;
    margin-bottom: 20px;
}

.welcome-message h2 {
    color: var(--primary);
    margin-bottom: 10px;
}

.welcome-message p {
    color: var(--gray);
    margin-bottom: 15px;
}

.suggested-questions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
    justify-content: center;
}

.suggested-question {
    background-color: white;
    border: 1px solid var(--light-gray);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.suggested-question:hover {
    background-color: var(--primary);
    color: white;
}

.messages {
    flex: 1;
    overflow-y: auto;
    padding: 10px 0;
}

.message {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.message.bot .avatar {
    background-color: var(--primary);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
}

.message.user {
    flex-direction: row-reverse;
}

.message.user .content {
    background-color: var(--primary);
    color: white;
}

.message.user .avatar {
    background-color: var(--gray);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
}

.content {
    max-width: 70%;
    padding: 15px;
    border-radius: 15px;
    background-color: var(--light);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.input-area {
    display: flex;
    gap: 10px;
    padding: 15px 0 0;
    border-top: 1px solid var(--light-gray);
}

.input-area input {
    flex: 1;
    padding: 15px 20px;
    border: 1px solid var(--light-gray);
    border-radius: 30px;
    outline: none;
    font-size: 16px;
    transition: all 0.3s ease;
}

.input-area input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
}

.input-area button {
    background-color: var(--primary);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.input-area button:hover {
    background-color: var(--secondary);
    transform: scale(1.05);
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 10px 15px;
    color: var(--gray);
    font-style: italic;
}

.typing-dots {
    display: flex;
    gap: 3px;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--gray);
    animation: typing 1.4s infinite ease-in-out;
}

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

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-5px); }
}

.feedback {
    display: flex;
    gap: 10px;
    margin-top: 10px;
    font-size: 14px;
}

.feedback button {
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
}

.feedback button:hover {
    color: var(--primary);
}

.admin-panel {
    background-color: var(--light);
    border-radius: 15px;
    padding: 20px;
    margin-top: 20px;
}

.admin-panel h3 {
    color: var(--dark);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.admin-form input, .admin-form textarea, .admin-form select {
    padding: 12px 15px;
    border: 1px solid var(--light-gray);
    border-radius: 10px;
    outline: none;
    font-size: 16px;
    transition: all 0.3s ease;
}

.admin-form input:focus, .admin-form textarea:focus, .admin-form select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
}

.admin-form textarea {
    min-height: 100px;
    resize: vertical;
}

.admin-form button {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 16px;
    font-weight: 600;
}

.admin-form button:hover {
    background-color: var(--secondary);
}

.toggle-admin {
    background-color: var(--light-gray);
    border: none;
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    margin-top: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.toggle-admin:hover {
    background-color: var(--gray);
    color: white;
}

@media (max-width: 768px) {
    .sidebar {
        display: none;
    }
    
    .container {
        height: 95vh;
    }
    
    .content {
        max-width: 85%;
    }
}