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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* Chat container */
.chat-container {
    width: 100%;
    max-width: 800px;
    height: 90vh;
    max-height: 700px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Chat header */
.chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.chat-header h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
}

.chat-header .subtitle {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 12px;
}

/* Connection status */
.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    opacity: 0.9;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #fbbf24;
    animation: pulse 2s infinite;
}

.status-dot.connected {
    background: #10b981;
    animation: none;
}

.status-dot.disconnected {
    background: #ef4444;
    animation: none;
}

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

/* Chat messages area */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f9fafb;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #9ca3af;
}

/* Message bubbles */
.message {
    display: flex;
    gap: 12px;
    max-width: 85%;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.message.user .message-avatar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.message.assistant .message-avatar {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.message.system .message-avatar {
    background: #6b7280;
}

.message-content {
    background: white;
    padding: 12px 16px;
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    word-wrap: break-word;
    white-space: pre-wrap;
}

.message.user .message-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.message.system .message-content {
    background: #f3f4f6;
    color: #6b7280;
    font-style: italic;
    font-size: 14px;
}

.message-text {
    line-height: 1.5;
    font-size: 15px;
}

.message-text a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid #667eea;
    transition: all 0.2s;
}

.message-text a:hover {
    color: #764ba2;
    border-bottom-color: #764ba2;
    background: rgba(102, 126, 234, 0.1);
    padding: 2px 4px;
    margin: -2px -4px;
    border-radius: 4px;
}

.message.user .message-text a {
    color: white;
    border-bottom-color: rgba(255, 255, 255, 0.5);
}

.message.user .message-text a:hover {
    border-bottom-color: white;
    background: rgba(255, 255, 255, 0.2);
}

.message-text strong {
    font-weight: 600;
}

.message-timestamp {
    font-size: 11px;
    color: #9ca3af;
    margin-top: 4px;
}

.message.user .message-timestamp {
    color: rgba(255, 255, 255, 0.7);
}

/* Chat input */
.chat-input-container {
    padding: 16px 20px;
    background: white;
    border-top: 1px solid #e5e7eb;
}

.input-wrapper {
    display: flex;
    gap: 12px;
    align-items: center;
}

.chat-input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 24px;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
}

.chat-input:focus {
    border-color: #667eea;
}

.send-button {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, opacity 0.2s;
}

.send-button:hover:not(:disabled) {
    transform: scale(1.05);
}

.send-button:active:not(:disabled) {
    transform: scale(0.95);
}

.send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.input-hint {
    margin-top: 8px;
    font-size: 12px;
    color: #6b7280;
    text-align: center;
}

.hint-command {
    font-family: 'Courier New', monospace;
    background: #f3f4f6;
    padding: 2px 6px;
    border-radius: 4px;
    color: #667eea;
    font-weight: 500;
}

/* Loading indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #9ca3af;
    animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

/* Responsive design */
@media (max-width: 768px) {
    body {
        padding: 0;
    }

    .chat-container {
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
    }

    .chat-header h1 {
        font-size: 20px;
    }

    .message {
        max-width: 90%;
    }
}