body {
    background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
    color: #333;
    min-height: 100vh;
    font-family: 'Segoe UI', 'Roboto', 'Arial', sans-serif;
}
.main-logo {
    max-width: 120px;
    box-shadow: 0 2px 14px rgba(143, 186, 214, .25);
}
.emphasis {
    color: #6a1b9a;
    font-weight: bold;
    transition: color 0.3s;
}
.card-title {
    color: #1976d2;
}
.card-img-top {
    object-fit: cover;
    height: 180px;
}
.navbar-brand img {
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(76, 175, 80, .18);
}
footer {
    background: #fafafa;
    color: #666;
}
.popup-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.popup-content {
    position: relative;
    width: 350px;
    max-width: 92vw;
    background: #fff;
    padding: 0;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    background-size: cover;
    background-position: center;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 250px;
}
.popup-footer {
    margin-top: auto;
    padding: 16px;
    background: rgba(255,255,255,0.95);
    text-align: center;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
}
.close-popup {
    position: absolute;
    top: 7px;
    right: 10px;
    background: rgba(255,255,255,0.85);
    border: none;
    font-size: 1.8rem;
    color: #333;
    cursor: pointer;
    border-radius: 100px;
    padding: 2px 10px;
    transition: background 0.2s;
}
.close-popup:hover {
    background: #f3e5f5;
}
@media (max-width: 768px) {
    .card-img-top { height: 140px; }
    .popup-content { width: 95vw; }
}