/* Mengatur latar belakang halaman login penuh */
body.login-page {
    background: linear-gradient(135deg, #4f46e5 0%, #3b82f6 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    margin: 0;
}

/* Mengatur kartu login agar melayang dan proporsional */
.login-card {
    background-color: #ffffff;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    width: 100%;
    max-width: 420px;
    border: none;
    transition: transform 0.3s ease;
}

/* Efek interaktif halus saat kartu login dimuat */
.login-card:hover {
    transform: translateY(-2px);
}

/* Desain logo lingkaran "KU" */
.logo-circle {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
    color: #4f46e5;
    font-size: 24px;
    font-weight: 800;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    margin: 0 auto;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.15);
}

/* Kustomisasi input Bootstrap agar lebih modern */
.login-card .form-control {
    padding: 0.6rem 1rem;
    border-radius: 8px;
    border: 1px solid #d1d5db;
    font-size: 0.95rem;
    transition: all 0.2s ease-in-out;
}

/* Efek saat input teks diklik (focus) */
.login-card .form-control:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

/* Mengubah tampilan tombol utama Bootstrap */
.login-card .btn-primary {
    background: linear-gradient(135deg, #4f46e5 0%, #3b82f6 100%);
    border: none;
    padding: 0.7rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.login-card .btn-primary:hover {
    opacity: 0.95;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.login-card .btn-primary:active {
    transform: translateY(0);
}

/* Styling alert kesalahan login */
.login-card .alert {
    border-radius: 8px;
    font-size: 0.9rem;
    padding: 0.75rem 1rem;
    border: none;
    background-color: #fee2e2;
    color: #dc2626;
}