/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #F5F5F0;
    --card-bg: #FFFFFF;
    --text-primary: #1A1A1A;
    --text-secondary: #555555;
    --accent-primary: #2C3E50;
    /* Deep Navy */
    --accent-secondary: #C0A062;
    /* Muted Gold */
    --border-color: #E0E0E0;
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: 60px 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

/* Header */
.portal-header {
    text-align: center;
    margin-bottom: 80px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--accent-secondary);
}

.logo-text {
    font-family: var(--font-body);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent-secondary);
    margin-bottom: 20px;
    display: inline-block;
    border: 1px solid var(--accent-secondary);
    padding: 8px 16px;
}

.portal-logo {
    width: 80px;
    height: auto;
    margin-bottom: 20px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.portal-title {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 15px;
    letter-spacing: -1px;
    line-height: 1.1;
}

.portal-subtitle {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--text-secondary);
    font-style: italic;
    max-width: 700px;
    margin: 0 auto;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    margin-bottom: 80px;
}

.simulation-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    display: block;
    height: 100%;
}

.simulation-card:hover {
    border-color: var(--accent-secondary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.card-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card-meta {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-secondary);
    margin-bottom: 15px;
    font-weight: 600;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
    line-height: 1.2;
}

.card-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    flex-grow: 1;
}

.card-features {
    list-style: none;
    margin-bottom: 30px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.card-features li {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 10px;
    padding-left: 15px;
    position: relative;
}

.card-features li::before {
    content: "•";
    color: var(--accent-secondary);
    position: absolute;
    left: 0;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.arrow {
    transition: transform 0.3s ease;
}

.simulation-card:hover .arrow {
    transform: translateX(5px);
    color: var(--accent-secondary);
}

/* Info Section */
.info-section {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    border-top: 1px solid var(--accent-primary);
    padding-top: 60px;
    margin-bottom: 60px;
}

.info-column h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--accent-primary);
    margin-bottom: 15px;
}

.info-column p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Footer */
.portal-footer {
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.footer-author {
    font-weight: 600;
    color: var(--accent-primary);
}

.separator {
    color: var(--accent-secondary);
}

/* Responsive */
@media (max-width: 900px) {
    .portal-title {
        font-size: 3rem;
    }

    .info-section {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 600px) {
    .portal-title {
        font-size: 2.5rem;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    body {
        padding: 40px 20px;
    }
}