:root {
    --bg-color: #111111;
    --text-color: #E0E0E0;
    --primary-color: #4A90E2; /* A professional blue */
    --primary-hover-color: #5AA1F2;
    --card-bg-color: #1C1C1C;
    --border-color: #333333;
    --success-color: #2ECC71;
    --error-color: #E74C3C;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 40px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    text-align: center;
}

.container {
    max-width: 900px;
    width: 100%;
}

.logo {
    display: inline-block;
    font-size: 24px;
    font-weight: 900;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 8px 12px;
    margin-bottom: 40px;
    border-radius: 8px;
}

h1 {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.2;
    margin: 0 0 16px 0;
    color: #FFFFFF;
}

h2 {
    font-size: 1.5rem;
    font-weight: 500;
    margin: 0 0 24px 0;
    color: var(--text-color);
}

.intro-p {
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto 50px auto;
}

.pillars {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.pillar {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    flex: 1;
    min-width: 180px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pillar:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.pillar i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.pillar h3 {
    font-size: 1.2rem;
    margin: 0 0 10px 0;
    color: #FFFFFF;
}

.pillar p {
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.cta h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
}

#signup-form {
    display: flex;
    justify-content: center;
    gap: 10px;
    max-width: 500px;
    margin: 0 auto;
    flex-wrap: wrap;
}

#signup-form input {
    flex-grow: 1;
    padding: 14px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg-color);
    color: var(--text-color);
    font-size: 1rem;
    min-width: 200px;
}

#signup-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.3);
}

#signup-form button {
    padding: 14px 25px;
    border-radius: 8px;
    border: none;
    background-color: var(--primary-color);
    color: #FFFFFF;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#signup-form button:hover {
    background-color: var(--primary-hover-color);
}

#form-message {
    margin-top: 15px;
    font-weight: 500;
    height: 20px; /* Reserve space to prevent layout shift */
}

.launch-date {
    margin-top: 25px;
    font-size: 1rem;
    color: var(--text-color);
}

footer {
    margin-top: 50px;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
}

.social-links a {
    color: var(--text-color);
    font-size: 1.5rem;
    margin: 0 15px;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--primary-color);
}

.footer-text {
    margin-top: 20px;
    font-size: 0.8rem;
    color: #888;
}

.footer-text a {
    color: #aaa;
    text-decoration: none;
}
.footer-text a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    .pillars {
        flex-direction: column;
    }
    #signup-form {
        flex-direction: column;
    }
    #signup-form button {
        width: 100%;
    }
}