:root {
    --blue: #003366;
    --golden: #D4AF37;
    --orange: #FF8C00;
    --white: #ffffff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0; padding: 0; overflow-x: hidden;
}

/* 3D Animation for Menu/Cards */
.hover-3d {
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.hover-3d:hover {
    transform: rotateY(10deg) rotateX(10deg) scale(1.05);
}

/* Top Bar */
.top-bar {
    background: var(--blue);
    color: white;
    padding: 10px 5%;
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

/* Header */
header {
    background: white;
    padding: 20px 5%;
    border-bottom: 4px solid var(--golden);
    display: flex;
    align-items: center;
}

header h1 {
    color: var(--blue);
    margin-left: 20px;
    font-weight: bold;
    text-transform: uppercase;
}

/* Two-Line Navigation */
.nav-container {
    background: #f8f8f8;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.nav-line {
    display: flex;
    justify-content: center;
    list-style: none;
    margin: 0; padding: 10px 0;
}

.nav-line a {
    text-decoration: none;
    color: var(--blue);
    font-weight: bold;
    padding: 10px 20px;
    transition: 0.3s;
}

.nav-line a:hover {
    color: var(--orange);
    border-bottom: 2px solid var(--golden);
}

/* Hero Section */
.hero {
    background: linear-gradient(45deg, rgba(0,51,102,0.8), rgba(212,175,55,0.4)), url('../images/banner.jpg');
    background-size: cover;
    height: 500px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
    perspective: 1000px;
}

.hero h2 { font-size: 3rem; text-shadow: 2px 2px 10px #000; }

.btn-join {
    background: var(--orange);
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    font-size: 1.2rem;
    cursor: pointer;
    text-decoration: none;
    transition: 0.3s;
}

.btn-join:hover { background: var(--golden); transform: translateY(-5px); }