.main-nav {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.header-nav {
    justify-content: flex-end;
}

.main-nav a,
.main-nav button {
    text-decoration: none;
    color: white;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.45);
    padding: 9px 13px;
    border-radius: 8px;
    font-size: 14px;
}

.main-nav a:hover,
.main-nav button:hover {
    background: rgba(255,255,255,0.22);
}

.nav-user {
    color: #d8f3df;
    font-size: 14px;
}

/* Header */
.top-bar {
    background: linear-gradient(135deg, #0f3d2e, #1f7a3f);
    color: white;
    padding: 24px 36px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar h1 {
    margin: 0;
    font-size: 30px;
}

.top-bar p {
    margin: 6px 0 0;
    color: #d8f3df;
}

.home-link {
    color: white;
    text-decoration: none;
    border: 1px solid rgba(255,255,255,0.5);
    padding: 10px 16px;
    border-radius: 8px;
}

#backToTop {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: #1f7a3f;
    color: white;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    z-index: 999;
}

#backToTop:hover {
    background: #14532d;
}