:root {
    --nu-blue: #0c112b;
    --nu-yellow: #FFD515;
    --nu-text: #eef1ff;
    --dark-input: #1a1d21;
}

body {
    background-color: var(--nu-blue);
    color: var(--nu-text);
    font-family: 'Outfit', sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
    overflow-x: hidden;
}

.auth-card {
    background: #12163a;
    width: 100%;
    max-width: 480px;
    padding: 3rem 2.5rem;
    border-radius: 30px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin: 1rem;
}

.brand-header {
    text-align: center;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.brand-icon {
    width: 60px;
    height: 60px;
    font-size: 26px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #26347d 0%, #3544a4 55%, #FFD51E 56%, #FFD51E 100%);
    border: 1px solid rgba(255, 255, 255, .18);
    box-shadow: 0 10px 24px rgba(0, 0, 0, .28);
    margin-bottom: 1rem;
}

.brand-icon i {
    color: #ffffff !important;
    text-shadow: 0 2px 6px rgba(0,0,0,.35);
}

.brand-logo {
    font-size: 2.2rem;
    color: #ffffff !important;
    font-weight: 900;
    margin-bottom: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 2px 8px rgba(0,0,0,.35);
}

.brand-sub {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, .82) !important;
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0.5px;
    margin-top: 6px;
    max-width: 320px;
    line-height: 1.35;
    text-shadow: 0 1px 6px rgba(0,0,0,.35);
}

.form-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-control-dark {
    background: var(--dark-input);
    border: 1px solid #333;
    color: #fff;
    padding: 0.8rem 1rem;
    border-radius: 12px;
    transition: all 0.3s;
}

.form-control-dark:focus {
    background: #25282c;
    border-color: var(--nu-yellow);
    box-shadow: 0 0 0 0.25rem rgba(255, 213, 21, 0.2);
    color: #fff;
}

.btn-register {
    background: var(--nu-yellow);
    color: var(--nu-blue);
    border: none;
    width: 100%;
    padding: 1rem;
    border-radius: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 1.5rem;
    transition: all 0.2s;
}

.btn-register:hover {
    background: #e6bc00;
    transform: translateY(-2px);
}

.auth-footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.auth-footer a {
    color: var(--nu-yellow);
    text-decoration: none;
    font-weight: 700;
}

@media (max-width: 480px) {
    .auth-card {
        padding: 2.5rem 1.5rem;
    }
}