body {
    background: linear-gradient(135deg, #f8f9fa 60%, #e6f3c1 100%);
    font-family: 'Segoe UI', Arial, sans-serif;
    min-height: 100vh;
    position: relative;
}

.container {
    max-width: 800px;
    margin-bottom: 3.5rem;
}

.card {
    border: none;
    border-radius: 1.2rem;
    box-shadow: 0 4px 24px rgba(90, 90, 90, 0.08);
    animation: fadeInCard 0.8s cubic-bezier(0.4,0,0.2,1);
}

@keyframes fadeInCard {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.header-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.2rem;
    position: relative;
    flex-wrap: wrap;
}

.header-logo img {
    height: 68px;
    margin-right: 16px;
    margin-bottom: 10px;
}

.header-logo h1, .header-logo h1.mb-0 {
    color: #5a5a5a;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 0;
    position: relative;
    z-index: 1;
}

.header-logo::after {
    content: '';
    display: block;
    width: 120px;
    height: 6px;
    background: linear-gradient(90deg, #c3d500 60%, #5a5a5a 100%);
    border-radius: 3px;
    position: absolute;
    left: 50%;
    bottom: -12px;
    transform: translateX(-50%);
    z-index: 0;
}

.form-label {
    font-weight: 500;
    color: #495057;
}

.btn-primary {
    background-color: #c3d500;
    border-color: #c3d500;
    color: #222;
    font-weight: 600;
    transition: background 0.2s, border 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(195, 213, 0, 0.15);
}

.btn-primary:hover {
    background-color: #a5b800;
    border-color: #a5b800;
    color: #fff;
    box-shadow: 0 4px 16px rgba(195, 213, 0, 0.25);
    transform: translateY(-2px) scale(1.03);
}

.btn-secondary {
    background-color: #5a5a5a;
    border-color: #5a5a5a;
    color: #fff;
    font-weight: 600;
    transition: background 0.2s, border 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(90, 90, 90, 0.10);
}

.btn-secondary:hover {
    background-color: #343a40;
    border-color: #343a40;
    box-shadow: 0 4px 16px rgba(90, 90, 90, 0.18);
    transform: translateY(-2px) scale(1.03);
}

input.form-control {
    border-radius: 0.5rem;
    border: 1.5px solid #c3d500;
    transition: border 0.2s, box-shadow 0.2s;
    box-shadow: 0 1px 4px rgba(195, 213, 0, 0.05);
}

input.form-control:focus {
    border-color: #5a5a5a;
    box-shadow: 0 0 0 0.2rem rgba(195, 213, 0, 0.18);
}

.display-4 {
    color: #c3d500;
    font-weight: 700;
}

footer {
    width: 100%;
    background: #f8f9fa;
    color: #5a5a5a;
    text-align: center;
    padding: 1.2rem 0 0.5rem 0;
    font-size: 1rem;
    border-top: 2px solid #c3d500;
    margin-top: 3rem;
    position: static;
    left: unset;
    bottom: unset;
}