/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

header p {
    font-size: 1.1em;
    color: #666;
    line-height: 1.6;
}

/* Dashboard Preview */
.dashboard-preview {
    background: rgba(255, 255, 255, 0.95);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.dashboard-preview h3 {
    margin-bottom: 20px;
    color: #333;
    font-size: 1.3em;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-card {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-label {
    display: block;
    font-size: 0.9em;
    opacity: 0.9;
    margin-bottom: 8px;
}

.stat-value {
    display: block;
    font-size: 1.8em;
    font-weight: bold;
}

/* Chat Container */
.chat-container {
    flex: 1;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 25px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
    margin-bottom: 20px;
    max-height: 400px;
    border: 2px solid #e9ecef;
}

.message {
    margin-bottom: 20px;
    padding: 15px 20px;
    border-radius: 18px;
    max-width: 85%;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-message {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 5px;
}

.ai-message {
    background: #ffffff;
    color: #333;
    border: 2px solid #e9ecef;
    margin-right: auto;
    border-bottom-left-radius: 5px;
}

.assistant-message {
    background: #ffffff;
    color: #333;
    border: 2px solid #e9ecef;
    margin-right: auto;
    border-bottom-left-radius: 5px;
}

.message-content {
    line-height: 1.6;
}

.message-content strong {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.message-content ul {
    margin: 10px 0;
    padding-left: 20px;
}

.message-content li {
    margin-bottom: 5px;
}

/* Input Container */
.chat-input-container {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 12px;
    border: 2px solid #e9ecef;
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

#messageInput {
    flex: 1;
    padding: 15px 20px;
    border: 2px solid #e9ecef;
    border-radius: 25px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s ease;
}

#messageInput:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#sendButton {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 80px;
}


#sendButton:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

#sendButton:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Input Hints */
.input-hints {
    margin-top: 15px;
}

.hint-label {
    display: block;
    margin-bottom: 10px;
    font-size: 0.9em;
    color: #666;
    font-weight: 500;
}

.hint-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.hint-btn {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    border: 1px solid rgba(102, 126, 234, 0.3);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hint-btn:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: translateY(-1px);
}

/* Loading Indicator */
.loading {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    margin-top: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.loading.show {
    display: flex;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #e9ecef;
    border-left: 2px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2em;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .stat-card {
        padding: 15px;
    }
    
    .stat-value {
        font-size: 1.5em;
    }
    
    .chat-messages {
        max-height: 300px;
        padding: 15px;
    }
    
    .message {
        max-width: 95%;
        padding: 12px 16px;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    #sendButton {
        align-self: flex-end;
        min-width: 100px;
    }
    
    .hint-buttons {
        justify-content: center;
    }
}

/* Custom scrollbar */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #764ba2;
}