.auth-card {
    max-width: 450px;
    margin: 40px auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

.auth-card h1 {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin: 0 0 25px 0;
    color: var(--text-dark);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    background-color: #f8fafc;
    color: var(--text-dark);
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(42, 117, 211, 0.1);
}

.btn-submit {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-submit:hover {
    background: var(--primary-hover);
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    padding: 12px;
    margin-bottom: 20px;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
}