.hero-section {
    background-image: url('/barbell.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: #ffffff;
    padding: 20px 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    pointer-events: none;
    z-index: 1;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-section h1,
.hero-section p,
.hero-section i {
    color: #ffffff;
    position: relative;
    z-index: 2;
}

.hero-section .btn i {
    color: inherit !important;
}

.example-box {
    border-left: 4px solid #007bff;
    font-size: 0.9rem;
}

.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    border: 1px solid rgba(0, 0, 0, 0.125);
}

.card-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
}

.table th {
    border-top: none;
    font-weight: 600;
}

.alert {
    border: none;
    border-radius: 0.5rem;
}