:root {
    --primary-color: #0A2342;
    --accent-color: #2CA58D;
    --background-color: #F8F9FA;
    --surface-color: #FFFFFF;
    --text-color: #212529;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--background-color);
    font-family: var(--font-family);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    height: 100vh;
    margin: 0;
}

.header {
    background: linear-gradient(135deg, var(--primary-color), #123A63);
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.header .icon {
    margin-right: 0.75rem;
}

.chat-container {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chat-bubble {
    padding: 0.75rem 1.25rem;
    border-radius: 0.75rem;
    max-width: 75%;
    line-height: 1.6;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.chat-bubble.user {
    background-color: var(--primary-color);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 0.25rem;
}

.chat-bubble.ai {
    background-color: var(--surface-color);
    color: var(--text-color);
    align-self: flex-start;
    border-bottom-left-radius: 0.25rem;
}

.chat-bubble.ai pre {
    white-space: pre-wrap;
    font-family: inherit;
    margin: 0;
}

.chat-input-form {
    display: flex;
    padding: 1rem 1.5rem;
    background-color: var(--surface-color);
    border-top: 1px solid #dee2e6;
}

.chat-input-form input {
    flex-grow: 1;
    border: 1px solid #ced4da;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-right: 0.5rem;
    font-size: 1rem;
}

.chat-input-form input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(44, 165, 141, 0.25);
}

.chat-input-form button {
    background-color: var(--accent-color);
    border: none;
    color: white;
    padding: 0.75rem 1.25rem;
    border-radius: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color 0.2s ease;
}

.chat-input-form button:hover {
    background-color: #238a75;
}

.thinking-indicator span {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #999;
    animation: bounce 1.4s infinite ease-in-out both;
}

.thinking-indicator span:nth-child(1) { animation-delay: -0.32s; }
.thinking-indicator span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}