/* wwwroot/css/layout.css */
.header {
    background: linear-gradient(45deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 15px 30px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.navbar-brand h1 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.navbar-nav {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 20px;
}

.nav-item {
    display: inline-block;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 5px;
    transition: background 0.3s ease, transform 0.3s ease;
}

    .nav-link:hover {
        background: var(--glass-bg);
        transform: translateY(-2px);
    }

    .nav-link.active {
        background: var(--glass-bg);
        font-weight: 700;
    }

.navbar-auth {
    display: flex;
    align-items: center;
    gap: 10px;
}

.auth-placeholder {
    font-size: 14px;
    font-style: italic;
    opacity: 0.8;
}

.main-content {
    padding: 20px;
    min-height: calc(100vh - 80px);
}

.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 30px;
    background: var(--card-bg);
    box-shadow: var(--shadow);
    border-radius: 15px;
    animation: slideIn 0.5s ease;
}

.content-container {
    background-color: #fbfbfb;
    border-radius: 10px;
    padding: 5px;
    height: auto;
}

.containerLogin {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 400px;
    padding: 30px;
    background: var(--card-bg);
    box-shadow: var(--shadow);
    border-radius: 15px;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    .navbar-nav {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .navbar-auth {
        flex-direction: column;
        gap: 5px;
    }

    .container, .containerLogin {
        margin: 20px 10px;
        padding: 20px;
    }
}

@media (max-width: 576px) {
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    .reward-card, .player-card {
        padding: 6px 10px;
        font-size: 12px;
    }

    .reward-options {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
}