:root {
    --primary-color: #00aaff;
    --secondary-color: #aa00ff;
    --background-color: #0d0d1a;
    --surface-color: #1a1a2e;
    --text-color: #e0e0e0;
    --header-font: 'Orbitron', sans-serif;
    --body-font: 'Roboto', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--body-font);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

#app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--surface-color);
}

header .logo {
    display: flex;
    align-items: center;
}

header .logo img {
    width: 50px;
    height: 50px;
    margin-right: 15px;
}

header h1 {
    font-family: var(--header-font);
    font-size: 2rem;
    color: var(--primary-color);
}

header nav a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 20px;
    font-size: 1rem;
    transition: color 0.3s ease;
}

header nav a:hover {
    color: var(--primary-color);
}

main {
    padding: 40px 0;
}

.hero {
    background-image: linear-gradient(rgba(13, 13, 26, 0.8), rgba(13, 13, 26, 0.8)), url('hero-background.png');
    background-size: cover;
    background-position: center;
    padding: 100px 40px;
    text-align: center;
    border-radius: 10px;
    margin-bottom: 40px;
}

.hero-content h2 {
    font-family: var(--header-font);
    font-size: 3rem;
    margin-bottom: 20px;
    color: #fff;
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 30px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button.secondary {
    background: var(--surface-color);
    border: 1px solid var(--primary-color);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 170, 255, 0.4);
}

.cta-button.secondary:hover {
     background: #2a2a4e; /* A slightly lighter surface color */
     box-shadow: 0 5px 15px rgba(0, 170, 255, 0.2);
}

.ai-demo, .privacy-policy {
    background-color: var(--surface-color);
    padding: 40px;
    border-radius: 10px;
    text-align: center;
}

.ai-demo h2, .privacy-policy h2 {
    font-family: var(--header-font);
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.demo-box {
    max-width: 700px;
    margin: 20px auto 0;
}

#chat-window {
    width: 100%;
    height: 400px;
    background-color: var(--background-color);
    border: 1px solid var(--primary-color);
    border-radius: 5px;
    padding: 15px;
    color: var(--text-color);
    font-family: var(--body-font);
    overflow-y: auto;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.message {
    max-width: 80%;
    padding: 10px 15px;
    border-radius: 15px;
    line-height: 1.5;
}

.user-message {
    background-color: var(--primary-color);
    color: #fff;
    align-self: flex-end;
    border-bottom-right-radius: 3px;
}

.ai-message {
    background-color: #2a2a4e; /* Lighter surface color */
    align-self: flex-start;
    border-bottom-left-radius: 3px;
}

.chat-input-area {
    display: flex;
    gap: 10px;
}

input#chat-input {
    flex-grow: 1;
    background-color: var(--background-color);
    border: 1px solid var(--primary-color);
    border-radius: 5px;
    padding: 12px 15px;
    color: var(--text-color);
    font-family: var(--body-font);
    font-size: 1rem;
}

input#chat-input:focus {
    outline: none;
    box-shadow: 0 0 10px rgba(0, 170, 255, 0.5);
}

button#send-btn {
    padding: 12px 25px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    color: #fff;
    font-size: 1rem;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

button#send-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 170, 255, 0.3);
}

button#send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.privacy-policy #policy-content {
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
}

.privacy-policy #policy-content h3 {
    font-family: var(--header-font);
    color: var(--primary-color);
    margin-top: 20px;
    margin-bottom: 10px;
}

.privacy-policy #policy-content p {
    margin-bottom: 15px;
}

footer {
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    border-top: 1px solid var(--surface-color);
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.loader {
    border: 4px solid var(--surface-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

@media (max-width: 768px) {
    header {
        flex-direction: column;
    }

    header nav {
        margin-top: 15px;
    }

    .hero-content h2 {
        font-size: 2.5rem;
    }
}

/* DEPRECATED STYLES */
textarea#prompt-input, button#generate-btn, #result-box {
    display: none;
}