:root {
    --dark: #1f2a38;
    --light: #f4f4f4;
    --accent: #c9a24d;
}

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

body {
    font-family: Arial, sans-serif;
    background: var(--light);
    color: #333;
    line-height: 1.7;
}

/* Header */
.hero {
    background: linear-gradient(rgba(0,0,0,.6), rgba(0,0,0,.6)),
                url("https://images.unsplash.com/photo-1529429617124-95b109e86bb8");
    background-size: cover;
    color: white;
    text-align: center;
    padding: 90px 20px;
}

/* Nav */
.nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    background: var(--dark);
    padding: 15px;
}

.nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

/* Sections */
.section {
    max-width: 1100px;
    margin: 70px auto;
    padding: 0 20px;
}

.section h2 {
    margin-bottom: 30px;
    color: var(--dark);
}

.alt {
    background: white;
    padding: 60px 20px;
}

/* Timeline */
.timeline {
    display: grid;
    gap: 30px;
}

.card {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 20px;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,.08);
}

.card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Architects */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
    gap: 20px;
}

.profile {
    background: var(--light);
    padding: 25px;
    border-radius: 10px;
}

/* BIM */
.bim ul {
    margin-top: 15px;
    padding-left: 20px;
}

/* Footer */
footer {
    background: var(--dark);
    color: white;
    text-align: center;
    padding: 25px;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .card {
        grid-template-columns: 1fr;
    }
}