:root {
    --bg-color: #121212;
    --surface-color: #1E1E1E;
    --primary-color: #00FF9B;
    --secondary-color: #00C2FF;
    --text-color: #E0E0E0;
    --text-muted-color: #888;
    --border-radius-md: 12px;
    --border-radius-sm: 8px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Roboto Mono', 'Consolas', 'Monaco', monospace;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

.chat-container {
    width: 100%;
    max-width: 800px;
    height: 100vh;
    max-height: 100vh; /* For mobile browsers */
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color);
    border-radius: 0;
    box-shadow: 0 0 40px rgba(0, 255, 155, 0.1);
    overflow: hidden;
}

.chat-header {
    padding: 16px 24px;
    background-color: var(--surface-color);
    border-bottom: 1px solid #333;
    text-align: center;
}

.chat-header h1 {
    font-size: 1.5rem;
    font-weight: 500;
    margin: 0;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

.chat-header .text-muted {
    font-size: 0.85rem;
    color: var(--text-muted-color);
    margin: 0;
}

.chat-messages {
    flex-grow: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Custom scrollbar for webkit browsers */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}
.chat-messages::-webkit-scrollbar-track {
    background: var(--bg-color);
}
.chat-messages::-webkit-scrollbar-thumb {
    background-color: var(--surface-color);
    border-radius: 6px;
}

.message {
    display: flex;
    max-width: 75%;
}

.message-content {
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    line-height: 1.5;
}

.message-content p {
    margin: 0;
}

.bot-message {
    align-self: flex-start;
}

.bot-message .message-content {
    background-color: var(--surface-color);
    border-top-left-radius: 0;
}

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

.user-message .message-content {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #000;
    border-top-right-radius: 0;
}

.chat-input-area {
    padding: 16px 24px;
    background-color: var(--surface-color);
    border-top: 1px solid #333;
}

#chat-form .form-control {
    background-color: #333;
    border: 1px solid #444;
    color: var(--text-color);
    border-radius: var(--border-radius-sm);
    padding: 12px 16px;
    height: 48px;
}

#chat-form .form-control:focus {
    background-color: #333;
    color: var(--text-color);
    box-shadow: 0 0 0 2px var(--primary-color);
    border-color: var(--primary-color);
}

#chat-form .form-control::placeholder {
    color: var(--text-muted-color);
}

#chat-form .btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: var(--border-radius-sm);
    margin-left: 12px;
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.2s ease;
}

#chat-form .btn:hover {
    transform: scale(1.05);
}

#chat-form .btn svg {
    color: #000;
}