:root {
    --auth-bg-start: #0d47a1;
    --auth-bg-end:   #42a5f5;
    --auth-card-bg:  #ffffff;
    --auth-border:   rgba(255, 255, 255, 0.2);
    --auth-shadow:   0 10px 30px rgba(0, 0, 0, 0.25);
    --auth-accent:   #1976d2;
    --auth-accent-soft: rgba(25, 118, 210, 0.1);
    --auth-error:    #e53935;
}

body.auth-body {
    min-height: 100vh;
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: linear-gradient(135deg, var(--auth-bg-start), var(--auth-bg-end));
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-wrapper {
    width: 100%;
    padding: 16px;
}

.auth-card {
    background: var(--auth-card-bg);
    border-radius: 16px;
    box-shadow: var(--auth-shadow);
    padding: 32px 28px;
    border: 1px solid var(--auth-border);
}

.auth-card__logo {
    text-align: center;
    margin-bottom: 16px;
}

.auth-card__logo-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--auth-accent-soft);
    margin: 0 auto 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--auth-accent);
    font-size: 28px;
    font-weight: 700;
}

.auth-card__title {
    text-align: center;
    margin-bottom: 8px;
    font-size: 22px;
    font-weight: 600;
    color: #0d47a1;
}

.auth-card__subtitle {
    text-align: center;
    margin-bottom: 24px;
    color: #607d8b;
    font-size: 14px;
}

.auth-card .form-group {
    margin-bottom: 16px;
}

.auth-card .form-control {
    border-radius: 10px;
    border-color: #cfd8dc;
    padding: 10px 12px;
}

.auth-card .form-control:focus {
    border-color: var(--auth-accent);
    box-shadow: 0 0 0 0.2rem rgba(25, 118, 210, 0.15);
}

.auth-card .help-block {
    color: var(--auth-error);
    font-size: 12px;
}

.auth-card .checkbox label {
    font-size: 13px;
    color: #455a64;
}

.auth-btn-primary {
    width: 100%;
    border-radius: 10px;
    padding: 10px 16px;
    font-weight: 600;
    background: linear-gradient(135deg, #1976d2, #42a5f5);
    border: none;
}

.auth-btn-primary:hover {
    background: linear-gradient(135deg, #1565c0, #1e88e5);
}

.auth-card__footer {
    margin-top: 16px;
    text-align: center;
    font-size: 13px;
    color: #546e7a;
}

.auth-card__footer a {
    color: #0d47a1;
    font-weight: 500;
}

@media (max-width: 576px) {
    .auth-card {
        padding: 24px 20px;
    }
}