:root {
    --primary-color: #6c5ce7;
    --secondary-color: #a29bfe;
    --background-color: #f8f9fa;
    --text-color: #2d3436;
    --message-user-bg: #6c5ce7;
    --message-ai-bg: #e0e0e0;
    --border-radius: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --primary-color: #a29bfe;
    --secondary-color: #6c5ce7;
    --background-color: #121212;
    --text-color: #f8f9fa;
    --message-user-bg: #6c5ce7;
    --message-ai-bg: #333333;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

body {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: var(--transition);
    height: 100vh;
    display: flex;
    flex-direction: column;
}

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

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

[data-theme="dark"] .header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header h1 {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    animation: fadeInDown 0.6s ease-out;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.status-text {
    color: var(--text-color);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #ff7675;
    animation: pulse 1.5s infinite;
}

.status-dot.connected {
    background-color: #00b894;
    animation: none;
}

.status-message {
    color: var(--text-color);
}

.theme-toggle {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.theme-toggle:hover {
    transform: rotate(30deg);
    background: var(--secondary-color);
}

.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    max-width: 80%;
    padding: 15px 20px;
    border-radius: var(--border-radius);
    position: relative;
    animation: fadeInUp 0.4s ease-out;
    transition: var(--transition);
    box-shadow: var(--shadow);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.message:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.12);
}

.message-content {
    flex: 1;
}

.message-content p {
    line-height: 1.5;
}

.user-message {
    background-color: var(--message-user-bg);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 5px;
}

.ai-message {
    background-color: var(--message-ai-bg);
    align-self: flex-start;
    border-bottom-left-radius: 5px;
}

.copy-icon {
    cursor: pointer;
    opacity: 0.7;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    margin-top: 5px;
}

.copy-icon:hover {
    opacity: 1;
    background-color: rgba(0, 0, 0, 0.1);
    transform: scale(1.1);
}

[data-theme="dark"] .copy-icon:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.input-container {
    padding: 20px 0;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

[data-theme="dark"] .input-container {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.input-group {
    display: flex;
    gap: 10px;
    background: var(--background-color);
    border-radius: var(--border-radius);
    padding: 5px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.input-group:focus-within {
    box-shadow: 0 0 0 2px var(--primary-color);
}

#userInput {
    flex: 1;
    border: none;
    background: transparent;
    padding: 15px;
    resize: none;
    color: var(--text-color);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

#sendButton {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

#sendButton:hover {
    background: var(--secondary-color);
    transform: scale(1.05);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.6;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .message {
        max-width: 90%;
    }
    
    .header-controls {
        width: 100%;
        justify-content: space-between;
    }
}